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Home My WebLink About0007050700",a4 THE ESTATES OF ROYDER RIDGE PEACH CREEK DRAINAGE ANALYSIS SEPTEMBER 2000 Prepared by: Joe Orr, Inc. Surveyors & Engin ?ers 2167 Post Oak Circle College Station, 'rX 77845 I- C "P' 1ANCE JAN 2 2 200 COLLEGE Sn3In IiON ENGINEERING THE ESTATES OF ROYDER RIDGE PEACH CREEK DRAINAGE ANALYSIS SEPTEMBER 2000 Prepared by: Joe Orr, Inc. Surveyors & Engineers 2167 Post Oak Circle College Station, TX 77845 The Estates of Royder Ridge Flood Plain Analysis of Peach Creek This report is to present the results of an analysis of the upper reach of the main channel of Peach Creek to determine the water surface elevations that will probably occur during a 100 year storm event through the proposed Estates of Royder Ridge subdivision. This proposed subdivision lies in Brazos County in the ETJ of the City of College Station. It adjoins the northwest side of Greens Prairie Trail and the northeast boundary of Cross Road Woods subdivision. It is approximately 0.2 mile northeast of Wellborn Road. The main channel of Peach Creek runs through this proposed development. There are approximately 1000 acres of drainage basin that is upstream. The basin is rural, mostly open pasture with woods along the creek channels. Some of the wooded areas contain thick brush and vines. The pastures are thick grass. The basin was divided into twelve subbasins for the analysis. Travel times were computed using the TR-55 method and hydrographs were developed, routed and combined through the basin. At the intersection of Peach Creek and the railroad approximately one-half mile northwest of Greens Prairie Trail, the railroad bridge causes a detention pond and a portion of the flow is diverted through the railroad ditch to the basin to the southeast. This diverted flow enters the main channel below the Royder Ridge project. The following are copies of the results of this analysis. Project: RRPCSCS2R.GPW OF file: Brazos.IDF 32 hyd's 09-26-2000 Hydrograph Summary Report Page 1 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to peak (min) Volume (tuft) Return period (yrs) Inflow hyd(s) Maximum elevation (ft) Maximum storage (cult) Hydrograph description 1 SCS Runoff 264.3 6 834 4,192,457 100 - Subbasin 1 2 SCS Runoff 299.9 6 834 4,758,310 100 Subbasin 2 Royder 3 Combine 564.2 6 834 8,950,769 100 1 +2 Subs 1 & 2 Royder 4 Reach 546.8 6 852 8,950,757 100 3 - Cnannel Routing 1 5 SCS Runoff 205.9 6 792 21377,941 100 Subbasin 3 6 SCS Runoff 394.4 6 816 5,539,651 100 Subbasin 4 7 Combine 691.8 6 840 11,328,701 100 5+4 Route 1 plus Sub 3 8 Combine 1062.0 6 834 16,868,340 100 6+7 Combine Sub 4 with 9 SCS Runoff 131.1 6 792 1,517,598 100 Subbasin 5 10 SCS Runoff 403.2 6 792 4,667,330 100 Subbasin 6 11 Reach 1058.7 6 846 16,868,340 100 8 Channel Reach 2 12 SCS Runoff 76.7 6 738 385,278 100 Subbasin 8 13 SCS Runoff 147.9 6 780 1,486,064 100 Subbasin 7 l 14 Combine 168.6 6 762 1,871,341 100 12 + 13 Sub 7 and Sub 8 15 ine 1361.8 6 834 0 100 $1 10+11 Combine sub 6 and 16 Reach 349.0 1 6 846 100 21,535,6 15 Route Reach 3 17 Reservoir 1492.0 6 840 22,953,031 100 16 294.57 243,957 Railroad Pond 18 Diversion1 903.8 6 840 15,453,760 100 17 bridge 19 Diversion2 588.2 6 840 7,499,268 100 17 side channel 20 Combine 1008.7 6 828 16,971,350 100 1 9+ 18 Combine sub 9 and 21 Reach 1009.3 6 834 0 100 16,971,35 20 Reach 4 22 I SCS Runoff 28.2 6 756 223,345 100 Subbasin 9 23 SCS Runoff 52.8 6 756 418,771 100 Subbasin 10 24 Combine 1.0 8 6 756 642,116 100 I 22 + 23 - - Combine subs 9 and 25 Combine 1119.3 6 822 1 100 18,842,70 14 + 21 Combine subs 7 & 8 26 Reach 1124.4 6 816 18,842,700 100 1 25 Reach 5 27 Combine 1157.7 6 816 0 100 19,484,81 24 +26 Combine Reach 5 an 28 Reach 1161.8 6 822 19,484,820 100 27 Reach 6 29 SCS Runoff I 49.3 6 756 390,853 100 335 100 340 - Subbasin 11 Subasin 12 30 I SCS Runoff 52.2 6 744 , 31 Combine 98.1 6 750 731,188 10O 29 + 3 0 Combine subs 11 an GP W I DF file: Brazos IDF R un date: 0 9-26-2000 Pro j. file: RR PCSCS 2R. . Hvdrograph Summary Report Page 2 Hyd. No. 32 Hydrograph type (origin) Combine Peak flow (cfs) 1186.5 Time interval (min) 6 Time to peak (min) 822 Volume (cult) 20,216,011 Return period (yrs) 100 Inflow hyd(s) 28 + 31 Maximum elevation (ft) Maximu storage (cult) Hydrograph description Conbine subs 11 an i I I Pro j. file: RR PCSCS 2R.GP W OF file: Brazos. IDF R un date: 09-26-2000 - HEC RAS SCHEMATIC 18 U m/ [U n CJ m 16 7 5 Upper Main I -ol Old Channel 3 N C1 1 O e e,F 14 Junction -12 10 U m, (b % 0 1 ~ 9 7.5 / 7 Lower Main 4 2 M ~ ~t M 1 I - N O O O r ~ 7 O M N N CD (D d7 M (D OD OD .G ' O M I~ a0 N (D 00 Cl) M O (D u) r N M (0 O CO V O IT ~ V' O N N O N O M N M CL 0 -j - O OD I-- O co O W u7 00 O V O LO O N r LO N M (D (0 d; M 00 t M CO Ce) pj M 00 O OD LO IT O (O OD (0 (D O N O -,Qlp .N N OD N N r _ O N m O O r O (n O (D N O N M N O O CO N O i~ O N 0 M c - N `7 V O M d) M h t0 N (D I~ O W M M N O M (D O t.- ; O M 0 o r D) M 00 00 (0 E ~ ~ L) CJ - r - O rl~ (D IT N u7 d7 ~ O ((00 O ~ CC) co N O 00 rl- N O N N O 0 N OD T M 0 O 9 O 9 Cl) 9 O 9 O 9 O 9 M 9 O 9 0 9 0 9 -N:l q O 7 O O 0 0 0 0 0 0 0 0 0 0 J' _ , J N N N 7 O M r N o ~t N O r 00 O O O - O V' O m- o 0 0 o 0 0 6 0 6 0 0 0 0 0 J Cr I~ d7 IT O V CD 0) Cl? M N M (0 (0 N M N r N M N O 0 O 0 0 0 O O O O O O O O O O O O O O O m V ~ l ~-1 J - . O U) O O (0 OD d' N d) LO r (0 M O M N M (D M M M r u1 w (D ) N M w V w M w V w LO w w O w O w (D OD r w CD w CO aD (D co (D w cD w W N N N N N N N N N N N N N N N r O O O u7 M M 0 N O (n OD Q7 ~ O 0 ' O m ' N f- ' O) m ' I~ LO U.) OD m ' (D > a co v ao v Co v CO > Sri ao L6 ao cfl ao W ao W ao r- ao W ao o ao (D ao (0 aD (D ao ao N N N N U N N N N N N N N N N N U W T m, CO rn v LD V '(0 co M a L C C C C, C M .(a M C_ :C G ',C, G _C C C y 'to M M ~M C ib c C C- C C C d~ cu (D 0 co m a~ m U Fa. 11 a~ CL m 0- - U U' C~ W ( 0 O O O I J J 0 0, o I Q. ' d OL QI - J J J _J D: D 0 0, O 010 = L J J J Keren Eidson Doris Liles, et al 124.8 Acres 5.0 Acres 300/609 2274/306 (Not Platted) (Not Platted) - - N 14'26'3 I - 29.28' X57 72' N 08.41'50" W - 85.27' \ t \ N 31'06 41 W -54.90 1 A8 Acres 0 N 13'33'33' W - 21.72' \ 6 j t•S• r f 1 16 , Acres N 18' 17'3(' W - 90.26' 20 Wit Arvin°9e ~ . N 1300'33" W - 19.47' John and Phyllis Carey 3.78 (Not Platted) 06 3 m 1a 310 . g E Fi I Rol V ` t 213.5' 1 x r / 1.02 Crossroad Woods 20' t:r'tyl Easement.' X23,8. ` _ 1697/219 (Plat) ?Oh IIA, ' 37 f w \ \ fpe f. \ n I It 1,91 1.1 Acres I0 l' 1 t N • i i /r'; , 1.Q' Acres.. utiYty;S Esm't ~o ut~uy L a( ".✓`:nom I~..4 - ..~+K ~ v rf i S - - - - A-07'48"33"" L-12290' T-61.54" Exist 2-bbl 8' CMP Culvert Ch-122.80' CS-S 481'15'0t' W Flood Plain Map 0 120 240 Estates of Royder Ridge LOWER MAIN C l u LL LL c fn ~ II w ~ ~ U ~ m 00 O O O (D N 0) r N Lo O ~ X O O a) O Cl) ~ o co co C\l c c_ C14 cq 04 cli (4) uogenal3 m C ~ li c (A ~ w a I ~ ~ m O O N 0) O ~ v 0 U X N m N T O Q' 00 00 N N (u) U011en913 0 0 Lo N 0 0 N z C) c 0 0 0 Lo 0 0 ~o co ~o rro 0 0 v (D r_ O O U) 0 0 N 0 0 o 00 N N LOWER MAIN C m c in rn a a+a = w cn I v I 2 m O O N o ■ 4 r 0 O Q N 00 Of 00 (D 'IT 04 CD co (D co co 00 00 00 r-- r- N N N N N N N (:U) U01lene13 I I C ~ l1, l.L I LL c fn d a a+a o~Y w CO U O O N G 7 o X N rn Q T O w U01;ena13 .-T ClJ C) 00 co W r- r- 'IT 00 N N N N N (u) U011en913 0 Lo N C a a U i a a 2 • m w U) ml m 0 Lo N O 0 T a O N N M (o o N r 0 C) ~ Q U C N O .B X Q O O O r a) T O Lo M ~ o 0 0 Lo Lo co 04 C> co co W 00 co ~ N N N N N N N ()J) U011BA913 , C V_ LL a c in a a- (L 0 c U) = l J w U m 0 o - Lo o N N Ln M O O 0 C=l N o co I Lo 0 r o Lo O •O U- O ) C) -p o E j, O M ■ O O O M 0 'n r C> LOWER MAIN O O CD N 0) N r ~ N O N X N m L.. O ac c I (u) U011BA913 c Iy u c cn ° ~ J w m co T Lo co O O O N 0') p r O7 O X N CY) L Q) ~ ~ C O (u) U01}eA913 a U) O • J W ` u) N m O Co O O [D C, O - O C) `n N 0) O r V 0) C) M c O CD . 3 X 2 ~ O rn o .a o N L ~ O d C O O O O C) 00 (D 0 UOIIBA913 m C u c ) m C7 2 • m w (3 m O o O N r N ~ O r O c ix a) O o rn m X cn am rn L a) T O O Lo W o co 0 0 i (11) U01JUA913 O O N O 0 0 0 O Lo O 0 0 r-- I 0 O w 0 0 Lo O c 0 o 0 75 Cl) O O N 0 0 O J cn O W • N co UPPER MAIN 0 0 0 m O C) N Lo CD r C) to °v O U c N N O LL X m O Cam) co O (O 'O O O N 0 0 0 C) N O O co 00 00 co N N 00 N co N N N (:q) uol;enal3 O O O co co O O 0 C) 0 0 0 co ILO 0) N N C. o °o 0) 0 LC) 0 r' D) "d oo o o c 0 o 0 o o y o M X x ( co to rn a_ o O N C:> Lo i % OT O ) rn O O O O O N O oO (D N -ter O ONO 00 O CC) N N CF) co 00 00 00 00 N N N N N N N N N N ()J) uol;en913 ()J) uol;en913 C ILL LL c in a ~ w m C LL LL C fn o• J W ~ co m C LL LL c (n O • ` J W ~ N PROFILE I , c u U- U d o~ a+CL o J W ~ i U ~ I ~ 0 o 0 1 I \ I 0 0 S m \ N CL n. 0 N \ \ O \ o0 0 N 1 0 1 ~ r rn O N _ ~ o o co c a) ~ I c t U Q' I, c F 3 1 , I O 0 C I I 3 I 0 J I I r I I N ~I ) N N O co co O co N N co N N W O N N r r <f 04 N (u) U011BA913 OLD CHANNEL m a a = U) a 2 0) 0 Iw U) 00 0 0 0 O 0 0 o ~ oO o C) O OOO o_ O 04 N rn N N 0) o 0 I N LJJ ~ O (O 0 U') O C C N O O N 0 X M X m oo C) 1 N N O p N O O O N N O r O O 00 CO V N O 00 I-- C.0 L V M N O 00 00 OD 00 00 00 00 00 00 00 00 00 00 N N N N N N N N N N N N N N ()J) UOIIBA813 U011BA913 U) m c ~ n C LL li c c lL IL a) a a me -,z d d a. oeY U) 2 U) w m dlw O °o o ° 0 O coo O co O O C) N ~ - 00 0 N LO O Cn ~ O M M ~ i~ O o LO } y - ■ c 0 o w X (D C) U) rn -a °v ~ °v a) N N w O C) C) N ~ N O O -y L O OD I- co LO st M N 00 r- f0 LO IT M N O co 00 00 co 00 co co 00 00 00 OD 00 co co 00 00 00 N N N N N N N N N N N N N N N N N (u) U0I1en213 ()J) u0genel3 ~ a ~ m m I ~ ~ m w ~ ~ m 1 - SCS Runoff - 100 Yr - Qp = 264.27 cfs 31 2 21 C1 1 + Hyd. 1 0 5 10 15 20 25 30 Time (hrs) 31 2 2 1 2 - SCS Runoff -100 Yr - Qp = 299.94 cfs + Hyd. 2 0 5 10 15 20 25 30 Time (hrs) 1 - SCS Runoff -100 Yr - Qp = 264.27 cfs 300 - 250 200 - - N 150 - - - + Hyd. 1 U 100 - - 50 - ►uMr~ - 0 0 5 10 15 20 25 30 Time (hrs) 1 cfs 3 D + Hyd. 1 + Hyd. 2 + Hyd. 3 4 - Reach - 100 Yr - Qp = 546.80 cfs 600 5 400 300 CY 2 1 + Hyd. 3 + Hyd. 4 0 5 10 15 20 25 30 Time (hrs) 5 - SCS Runoff -100 Yr - Qp = 205.87 cfs 2 2 N 1 CY 1 + Hyd. 5 0 5 10 15 20 25 30 Time (hrs) 7-Combine -100Yr-Qp=691.81 cfs soo - - + Hyd. 5 600 +Hyd. 4 200 + Hyd. 7 0 0 5 10 15 20 25 30 Time (hrs) 400 30 20 CY 10 6 - SCS Runoff -100 Yr - Qp = 394.39 cfs D-4 0 5 10 15 20 25 30 Time (hrs) + Hyd. 6 8 - Combine - 100 Yr - Qp = 1061.96 cfs 1500 + Hyd. 6 1000 N + Hyd. 7 500 + Hyd. 8 0 0 5 10 15 20 25 30 Time (hrs) 11 - Reach - 100 Yr - Qp = 1058.75 cfs 1500 + Hyd. 8 100 CY 50 + Hyd. 11 DA 0 5 10 15 20 25 30 Time (hrs) 10 - SCS Runoff -100 Yr - Qp = 403.21 cfs 400 N 300 Hyd. 10 CY 200 100 0 0 5 10 15 20 25 30 Time (hrs) 15 - Combine -100 Yr - Qp = 1361.82 cfs 1500 - + Hyd. 10 1000 CJ + Hyd. 11 500 - + Hyd. 15 0 0 5 10 15 20 25 30 Time (hrs) 16 - Reach -100 Yr - Qp = 1362.35 cfs 1500 + Hyd. 15 1000 CY 500 Hyd. 16 0 0 5 10 15 20 25 30 Time (hrs) 16 - Reach -100 Yr - Qp = 1362.35 cfs 1500 + Hyd. 15 1000 - U 500 + Hyd. 16 0 0 5 10 15 20 25 30 Time (hrs) 17 - Reservoir -100 Yr - Qp = 1360.76 cfs 1500 + Hyd. 16 1000 v U 500 + Hyd. 17 0 0 5 10 15 20 25 30 Time (hrs) S Hyd. 16 Hyd. 17 18 - Diversion1 -100 Yr - Qp = 857.86 cfs 1500 + Hyd. 17 1000 - - - CJ + Hyd. 19 500 + Hyd. 18 0 0 5 10 15 20 25 30 Time (hrs) 18 - Diversion1 -100 Yr - Qp = 857.86 cfs 1500 ~ + Hyd. 17 1000 - - _ + Hyd. 19 500 + Hyd. 18 0 0 5 10 15 20 25 30 Time (hrs) 9 - SCS Runoff -100 Yr - Qp = 131.11 cfs 150 100 + Hyd. 9 CJ 50 - 0 0 5 10 15 20 25 30 Time (hrs) 20 - Combine -100 Yr - Qp = 959.58 cfs 1000 800 + Hyd. 9 y 600 C1 Hyd. 18 400 200- + Hyd. 20 0 0 5 0 15 20 25 30 Time (hrs) 21 - Reach - 100 Yr - Qp = 960.43 cfs 1 + Hyd. 20 U + Hyd. 21 Time (hrs) 12 - SCS Runoff -100 Yr - Qp = 76.70 cfs 8 6 4 CJ 2 J, + Hyd. 12 o~ 0 5 10 15 20 Time (hrs) 25 13 - SCS Runoff -100 Yr - Qp = 147.85 cfs 150 100 Hyd. 13 C~ 50 - 0 0 5 10 15 20 25 30 Time (hrs) 14 - Combine -100 Yr - Qp = 168.60 cfs 200 - + Hyd. 12 150 CY 100 + Hyd. 13 50 Hyd. 14 0 0 5 10 15 20 25 30 Time (hrs) 25 - Combine -100 Yr - Qp = 1066.94 cfs 1500 + Hyd. 14 1000 - CY 500 + Hyd. 21 0 10 15 20 25 30 + Hyd. 25 -500 - Time (hrs) 26 - Reach -100 Yr - Qp = 1068.04 cfs 1500 + Hyd. 25 1000 - 500 0 15 20 25 30 + Hyd. 26 -500 Time (hrs) 22 - SCS Runoff - 100 Yr - Qp = 28.16 cfs 30 25 20 15 + Hyd. 22 CJ 10 5 0 0 5 10 15 20 25 30 Time (hrs) 23 - SCS Runoff -100 Yr - Qp = 52.81 cfs 50 40 + Hyd. 23 CJ 30 20 10 0 0 5 10 15 20 25 30 Time (hrs) 24 - Combine -100 Yr - Qp = 80.97 cfs 100 - - + Hyd. 22 80 N 60 - CY + Hyd. 23 40 20 - + Hyd. 24 0 0 5 10 15 20 25 30 Time (hrs) 27 - Combine -100 Yr - Qp = 1101.20 cfs CJ 1 1 VVV + Hyd. 24 + Hyd. 26 + Hyd. 27 Time (hrs) 28 - Reach -100 Yr - Qp = 1109.09 cfs 1500- + Hyd. 27 1000- (Y 500- 0 15 20 25 30 + Hyd. 28 -500- Time (hrs) 29 - SCS Runoff -100 Yr - Qp = 49.29 cfs 50-- 40- N 30 + Hyd. 29 CJ 20 10 0 0 5 10 15 20 25 30 Time (hrs) 30 - SCS Runoff - 100 Yr - Qp = 52.18 cfs 60- 50- 3 CJ 2 1 4 + Hyd. 30 7 5 10 15 20 25 Time (hrs) 31 - Combine -100 Yr - Qp = 98.14 cfs 100 + Hyd. 29 80 N 60 CY 40 + Hyd. 30 20 + Hyd. 31 0 0 5 10 15 20 25 Time (hrs) 32 - Combine -100 Yr - Qp = 1151.58 cfs C~ 1500 + Hyd. 28 1000 500 - + Hyd. 31 0 1,5 20 25 0 + Hyd. 32 -500--- Time (hrs) Hydrograph Report Page 1 English Hyd. No. 1 Subbasin 1 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 163.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 264.27 cfs Time interval = 6 min Curve number = 70 Hydraulic length = 0 ft Time of conc. (Tc) = 193.2 min Distribution = Type II Shape factor = 484 Total Volume = 4,192,457 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 8.90 2.92 12.10 60.52 15.30 190.72 18.50 39.41 9.00 3.21 12.20 72.12 15.40 183.78 18.60 38.67 9.10 3.52 12.30 84.03 15.50 176.73 18.70 37.97 9.20 3.85 12.40 96.19 15.60 169.58 18.80 37.30 9.30 4.21 12.50 108.53 15.70 162.33 18.90 36.66 9.40 4.58 12.60 120.99 15.80 155.00 19.00 36.05 9.50 4.97 12.70 133.55 15.90 147.60 19.10 35.46 9.60 5.38 12.80 146.17 16.00 140.14 19.20 34.89 9.70 5.81 12.90 158.83 16.10 132.64 19.30 34.34 9.80 6.26 13.00 171.51 16.20 125.09 19.40 33.80 9.90 6.74 13.10 184.18 16.30 117.52 19.50 33.28 10.00 7.25 13.20 196.79 16.40 109.91 19.60 32.77 10.10 7.79 13.30 209.30 16.50 102.29 19.70 32.27 10.20 8.36 13.40 221.65 16.60 94.69 19.80 31.79 10.30 8.96 13.50 233.80 16.70 87.11 19.90 31.32 10.40 9.61 13.60 245.31 16.80 79.58 20.00 30.86 10.50 10.29 13.70 255.32 16.90 72.26 20.10 30.41 10.60 11.02 13.80 262.59 17.00 65.47 20.20 29.96 10.70 11.79 13.90 264.27 << 17.10 59.68 20.30 29.53 10.80 12.63 14.00 261.81 17.20 55.98 20.40 29.11 10.90 13.52 14.10 258.60 17.30 53.82 20.50 28.70 11.00 14.49 14.20 254.75 17.40 51.90 20.60 28.29 11.10 15.51 14.30 250.35 17.50 50.21 20.70 27.90 11.20 16.64 14.40 245.50 17.60 48.70 20.80 27.51 11.30 17.88 14.50 240.32 17.70 47.34 20.90 27.13 11.40 19.27 14.60 234.86 17.80 46.09 21.00 26.76 11.50 20.82 14.70 229.15 17.90 44.93 21.10 26.40 11.60 22.80 14.80 223.20 18.00 43.85 21.20 26.05 11.70 25.75 14.90 217.04 18.10 42.84 21.30 25.70 11.80 30.41 15.00 210.70 18.20 41.90 21.40 25.36 11.90 38.58 15.10 204.19 18.30 41.02 21.50 25.03 12.00 49.32 15.20 197.52 18.40 40.19 21.60 24.71 Continues on next page... Subbasin 1 Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 21.70 24.40 26.60 7.51 21.80 24.10 26.70 6.95 21.90 23.82 26.80 6.40 22.00 23.54 26.90 5.88 22.10 23.27 27.00 5.38 22.20 23.02 27.10 4.91 22.30 22.78 27.20 4.46 22.40 22.55 27.30 4.03 22.50 22.32 27.40 3.62 22.60 22.11 27.50 3.23 22.70 21.91 27.60 2.87 22.80 21.72 22.90 21.54 23.00 21.36 ...End 23.10 21.19 23.20 21.04 23.30 20.88 23.40 20.74 23.50 20.60 23.60 20.47 23.70 20.35 23.80 20.23 23.90 20.11 24.00 20.00 24.10 19.87 24.20 19.70 24.30 19.50 24.40 19.27 24.50 19.01 24.60 18.73 24.70 18.41 24.80 18.06 24.90 17.68 25.00 17.26 25.10 16.82 25.20 16.34 25.30 15.84 25.40 15.30 25.50 14.72 25.60 14.12 25.70 13.49 25.80 12.82 25.90 12.12 26.00 11.39 26.10 10.69 26.20 10.01 26.30 9.35 26.40 8.71 26.50 8.10 Page 2 TR55 Tc Worksheet Page 1 Hyd. No. 1 Subbasin 1 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 300.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 100.2 min Shallow Concentrated Flow Flow length = 3833 ft Watercourse slope = 0.9 % Surface description = Unpaved Average velocity = 1.53 ft/s Travel Time = 41.7 min Channel Flow Cross section flow area = 2.0 sqft Wetted perimeter = 5.6 ft Channel slope = 0.3 % a Manning's n-value = 0.200 Velocity = 0.22 ft/s Flow length = 683.0 ft Travel Time = 51.2 min Total Travel Time, Tc = 193.2 min Hydrograph Report Page 1 English Hyd. No. 2 Subbasin 2 Royder Ridge Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 185.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 299.94 cfs Time interval = 6 min Curve number = 70 Hydraulic length = 0 ft Time of conc. (Tc) = 193.9 min Distribution = Type II Shape factor = 484 Total Volume = 4,758,310 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 8.90 3.31 12.10 68.69 15.30 216.46 18.50 44.73 9.00 3.64 12.20 81.85 15.40 208.58 18.60 43.89 9.10 4.00 12.30 95.37 15.50 200.58 18.70 43.09 9.20 4.37 12.40 109.18 15.60 192.46 18.80 42.33 9.30 4.77 12.50 123.18 15.70 184.24 18.90 41.61 9.40 5.19 12.60 137.32 15.80 175.92 19.00 40.91 9.50 5.64 12.70 151.57 15.90 167.52 19.10 40.24 9.60 6.10 12.80 165.90 16.00 159.06 19.20 39.60 9.70 6.59 12.90 180.27 16.10 150.54 19.30 38.97 9.80 7.11 13.00 194.66 16.20 141.98 19.40 38.36 9.90 7.65 13.10 209.04 16.30 133.38 19.50 37.77 10.00 8.23 13.20 223.35 16.40 124.74 19.60 37.19 10.10 8.84 13.30 237.55 16.50 116.10 19.70 36.63 10.20 9.49 13.40 251.56 16.60 107.47 19.80 36.08 10.30 10.17 13.50 265.36 16.70 98.87 19.90 35.55 10.40 10.90 13.60 278.42 16.80 90.32 20.00 35.02 10.50 11.68 13.70 289.78 16.90 82.01 20.10 34.51 10.60 12.50 13.80 298.04 17.00 74.30 20.20 34.01 10.70 13.39 13.90 299.94 << 17.10 67.74 20.30 33.52 10.80 14.33 14.00 297.14 17.20 63.54 20.40 33.04 10.90 15.35 14.10 293.50 17.30 61.08 20.50 32.57 11.00 16.44 14.20 289.13 17.40 58.91 20.60 32.11 11.10 17.61 14.30 284.14 17.50 56.99 20.70 31.66 11.20 18.88 14.40 278.64 17.60 55.27 20.80 31.22 11.30 20.30 14.50 272.76 17.70 53.73 20.90 30.79 11.40 21.87 14.60 266.56 17.80 52.31 21.00 30.38 11.50 23.63 14.70 260.07 17.90 50.99 21.10 29.96 11.60 25.88 14.80 253.32 18.00 49.76 21.20 29.56 11.70 29.22 14.90 246.34 18.10 48.62 21.30 29.17 11.80 34.52 15.00 239.14 18.20 47.56 21.40 28.79 11.90 43.78 15.10 231.75 18.30 46.56 21.50 28.41 12.00 55.98 15.20 224.18 18.40 45.62 21.60 28.05 Continues on next page... Subbasin 2 Royder Ridge Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 21.70 27.70 26.60 8.53 21.80 27.36 26.70 7.88 21.90 27.03 26.80 7.27 22.00 26.72 26.90 6.68 22.10 26.42 27.00 6.11 22.20 26.13 27.10 5.57 22.30 25.85 27.20 5.06 22.40 25.59 27.30 4.57 22.50 25.34 27.40 4.11 22.60 25.10 27.50 3.67 22.70 24.87 27.60 3.26 22.80 24.65 22.90 24.44 23.00 24.24 End 23.10 24.05 23.20 23.87 23.30 23.70 23.40 23.54 23.50 23.38 23.60 23.23 23.70 23.09 23.80 22.96 23.90 22.83 24.00 22.70 24.10 22.55 24.20 22.36 24.30 22.13 24.40 21.87 24.50 21.58 24.60 21.25 24.70 20.89 24.80 20.49 24.90 20.06 25.00 19.59 25.10 19.09 25.20 18.55 25.30 17.97 25.40 17.36 25.50 16.71 25.60 16.03 25.70 15.31 25.80 14.55 25.90 13.76 26.00 12.93 26.10 12.13 26.20 11.36 26.30 10.61 26.40 9.89 26.50 9.19 Page 2 TR55 Tc Worksheet Hyd. No. 2 Subbasin 2 Royder Ridge Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 275.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 93.5 min Shallow Concentrated Flow Flow length = 3718 ft Watercourse slope = 0.9 % Surface description = Unpaved Average velocity = 1.53 ft/s Travel Time = 40.5 min Channel Flow Cross section flow area = 6.0 sqft Wetted perimeter = 9.6 ft Channel slope = 0.3 % Manning's n-value = 0.200 Velocity = 0.30 ft/s Flow length = 1075.0 ft Travel Time = 60.0 min Page 1 Total Travel Time, Tc = 193.9 min Hydrograph Report Hyd. No. 3 Subs 1 & 2 Royder Ridge Hydrograph type = Combine Storm frequency = 100 yrs 1 st inflow hyd. No.= 1 Page 1 English Peak discharge = 564.21 cfs Time interval = 6 min 2nd inflow hyd. No: 2 Total Volume = 8,950,769 cuft Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 8.90 2.92 3.31 9.00 3.21 3.64 9.10 3.52 4.00 9.20 3.85 4.37 9.30 4.21 4.77 9.40 4.58 5.19 9.50 4.97 5.64 9.60 5.38 6.10 9.70 5.81 6.59 9.80 6.26 7.11 9.90 6.74 7.65 10.00 7.25 8.23 10.10 7.79 8.84 10.20 8.36 9.49 10.30 8.96 10.17 10.40 9.61 10.90 10.50 10.29 11.68 10.60 11.02 12.50 10.70 11.79 13.39 10.80 12.63 14.33 10.90 13.52 15.35 11.00 14.49 16.44 11.10 15.51 17.61 11.20 16.64 18.88 11.30 17.88 20.30 11.40 19.27 21.87 11.50 20.82 23.63 11.60 22.80 25.88 11.70 25.75 29.22 11.80 30.41 34.52 11.90 38.58 43.78 12.00 49.32 55.98 12.10 60.52 68.69 12.20 72.12 81.85 12.30 84.03 95.37 12.40 96.19 109.18 Outflow cfs 6.22 6.85 7.52 8.23 8.98 9.77 10.60 11.48 12.40 13.37 14.40 15.48 16.63 17.84 19.14 20.51 21.97 23.52 25.18 26.96 28.87 30.93 33.12 35.52 38.18 41.14 44.45 48.69 54.97 64.93 82.36 105.30 129.22 153.97 179.40 205.37 Continues on next page Subs 1 & 2 Royder Ridge Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 12.50 108.53 123.18 231.71 12.60 120.99 137.32 258.31 12.70 133.55 151.57 285.12 12.80 146.17 165.90 312.07 12.90 158.83 180.27 339.11 13.00 171.51 194.66 366.16 13.10 184.18 209.04 393.23 13.20 196.79 223.35 420.15 13.30 209.30 237.55 446.84 13.40 221.65 251.56 473.21 13.50 233.80 265.36 499.16 13.60 245.31 278.42 523.72 13.70 255.32 289.78 545.10 13.80 262.59 298.04 560.63 13.90 264.27 << 299.94 << 564.21 << 14.00 261.81 297.14 558.95 14.10 258.60 293.50 552.10 14.20 254.75 289.13 543.88 14.30 250.35 284.14 534.48 14.40 245.50 278.64 524.14 14.50 240.32 272.76 513.08 14.60 234.86 266.56 501.42 14.70 229.15 260.07 489.22 14.80 223.20 253.32 476.52 14.90 217.04 246.34 463.38 15.00 210.70 239.14 449.84 15.10 204.19 231.75 435.94 15.20 197.52 224.18 421.71 15.30 190.72 216.46 407.17 15.40 183.78 208.58 392.36 15.50 176.73 200.58 377.31 15.60 169.58 192.46 362.04 15.70 162.33 184.24 346.57 15.80 155.00 175.92 330.92 15.90 147.60 167.52 315.13 16.00 140.14 159.06 299.20 16.10 132.64 150.54 283.18 16.20 125.09 141.98 267.07 16.30 117.52 133.38 250.89 16.40 109.91 124.74 234.65 16.50 102.29 116.10 218.39 16.60 94.69 107.47 202.16 16.70 87.11 98.87 185.98 16.80 79.58 90.32 169.90 16.90 72.26 82.01 154.26 17.00 65.47 74.30 139.77 17.10 59.68 67.74 127.42 17.20 55.98 63.54 119.52 17.30 53.82 61.08 114.90 Page 2 Continues on next page... Subs 1 & 2 Royder Ridge Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 17.40 51.90 58.91 17.50 50.21 56.99 17.60 48.70 55.27 17.70 47.34 53.73 17.80 46.09 52.31 17.90 44.93 50.99 18.00 43.85 49.76 18.10 42.84 48.62 18.20 41.90 47.56 18.30 41.02 46.56 18.40 40.19 45.62 18.50 39.41 44.73 18.60 38.67 43.89 18.70 37.97 43.09 18.80 37.30 42.33 18.90 36.66 41.61 19.00 36.05 40.91 19.10 35.46 40.24 19.20 34.89 39.60 19.30 34.34 38.97 19.40 33.80 38.36 19.50 33.28 37.77 19.60 32.77 37.19 19.70 32.27 36.63 19.80 31.79 36.08 19.90 31.32 35.55 20.00 30.86 35.02 20.10 30.41 34.51 20.20 29.96 34.01 20.30 29.53 33.52 20.40 29.11 33.04 20.50 28.70 32.57 20.60 28.29 32.11 20.70 27.90 31.66 20.80 27.51 31.22 20.90 27.13 30.79 21.00 26.76 30.38 21.10 26.40 29.96 21.20 26.05 29.56 21.30 25.70 29.17 21.40 25.36 28.79 21.50 25.03 28.41 21.60 24.71 28.05 21.70 24.40 27.70 21.80 24.10 27.36 21.90 23.82 27.03 22.00 23.54 26.72 22.10 23.27 26.42 22.20 23.02 26.13 Outflow cfs 110.81 107.20 103.98 101.07 98.40 95.92 93.61 91.46 89.46 87.58 85.81 84.14 82.56 81.06 79.63 78.27 76.96 75.70 74.49 73.31 72.16 71.05 69.96 68.90 67.87 66.87 65.88 64.92 63.97 63.05 62.15 61.27 60.40 59.56 58.73 57.93 57.14 56.37 55.61 54.87 54.15 53.45 52.77 52.10 51.46 50.85 50.26 49.69 49.15 Page 3 Continues on next page Subs 1 & 2 Royder Ridge Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 22.30 22.78 25.85 22.40 22.55 25.59 22.50 22.32 25.34 22.60 22.11 25.10 22.70 21.91 24.87 22.80 21.72 24.65 22.90 21.54 24.44 23.00 21.36 24.24 23.10 21.19 24.05 23.20 21.04 23.87 23.30 20.88 23.70 23.40 20.74 23.54 23.50 20.60 23.38 23.60 20.47 23.23 23.70 20.35 23.09 23.80 20.23 22.96 23.90 20.11 22.83 24.00 20.00 22.70 24.10 19.87 22.55 24.20 19.70 22.36 24.30 19.50 22.13 24.40 19.27 21.87 24.50 19.01 21.58 24.60 18.73 21.25 24.70 18.41 20.89 24.80 18.06 20.49 24.90 17.68 20.06 25.00 17.26 19.59 25.10 16.82 19.09 25.20 16.34 18.55 25.30 15.84 17.97 25.40 15.30 17.36 25.50 14.72 16.71 25.60 14.12 16.03 25.70 13.49 15.31 25.80 12.82 14.55 25.90 12.12 13.76 26.00 11.39 12.93 26.10 10.69 12.13 26.20 10.01 11.36 26.30 9.35 10.61 26.40 8.71 9.89 26.50 8.10 9.19 26.60 7.51 8.53 26.70 6.95 7.88 26.80 6.40 7.27 26.90 5.88 6.68 27.00 5.38 6.11 27.10 4.91 5.57 Outflow cfs 48.63 48.13 47.66 47.21 46.78 46.37 45.98 45.60 45.25 44.91 44.59 44.28 43.99 43.71 43.44 43.19 42.94 42.71 42.41 42.06 41.63 41.15 40.60 39.98 39.30 38.55 37.74 36.86 35.91 34.89 33.81 32.66 31.44 30.15 28.79 27.37 25.88 24.32 22.82 21.36 19.96 18.60 17.29 16.04 14.83 13.67 12.56 11.49 10.48 Page 4 Continues on next page. Subs 1 & 2 Royder Ridge Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 27.20 4.46 5.06 27.30 4.03 4.57 27.40 3.62 4.11 27.50 3.23 3.67 27.60 2.87 3.26 Outflow cfs 9.51 8.60 7.73 6.90 6.13 Page 5 End Hydrograph Report Hyd. No. 4 Cnannel Routing 1 - Royder Ridge Hydrograph type = Reach Peak discharge Storm frequency = 100 yrs Time interval Inflow hyd. No. = 3 Section type Reach length = 4794.0 ft Channel slope Manning's n = 0.200 Bottom width Side slope = 1.0:1 Max. depth Rating curve x = 0.153 Rating curve m Ave. velocity = 3.92 ft/s Routing coeff. Modified Att-Kin routing method used. Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 9.10 7.52 5.81 9.20 8,23 6.40 9.30 8.98 7.04 9.40 9.77 7.71 9.50 10.60 8.43 9.60 11.48 9.19 9.70 12.40 9.98 9.80 13.37 10.83 9.90 14.40 11.71 10.00 15.48 12.65 10.10 16.63 13.63 10.20 17.84 14.68 10.30 19.14 15.78 10.40 20.51 16.95 10.50 21.97 18.19 10.60 23.52 19.50 10.70 25.18 20.90 10.80 26.96 22.39 10.90 28.87 23.98 11.00 30.93 25.68 11.10 33.12 27.51 11.20 35.52 29.46 11.30 38.18 31.57 11.40 41.14 33.87 11.50 44.45 36.40 11.60 48.69 39.20 11.70 54.97 42.50 11.80 64.93 46.84 11.90 82.36 53.14 12.00 105.30 63.31 12.10 129.22 77.92 12.20 153.97 95.77 Page 1 English = 546.80 cfs = 6 min = Trapezoidal = 0.4% = 5.0 ft = 2.0 ft = 1.431 = 0.3480 Total Volume = 8,950,757 cuft Continues on next page. Cnannel Routing 1 - Royder Ridge Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 12.30 179.40 116.03 12.40 205.37 138.09 12.50 231.71 161.50 12.60 258.31 185.94 12.70 285.12 211.13 12.80 312.07 236.88 12.90 339.11 263.05 13.00 366.16 289.52 13.10 393.23 316.20 13.20 420.15 343.01 13.30 446.84 369.85 13.40 473.21 396.65 13.50 499.16 423.30 13.60 523.72 449.70 13.70 545.10 475.46 13.80 560.63 499.70 13.90 564.21 << 520.91 14.00 558.95 535.98 14.10 552.10 543.97 14.20 543.88 546.80 << 14.30 534.48 545.78 14.40 524.14 541.85 14.50 513.08 535.69 14.60 501.42 527.82 14.70 489.22 518.63 14.80 476.52 508.39 14.90 463.38 497.30 15.00 449.84 485.49 15.10 435.94 473.08 15.20 421.71 460.15 15.30 407.17 446.77 15.40 392.36 432.99 15.50 377.31 418.85 15.60 362.04 404.39 15.70 346.57 389.65 15.80 330.92 374.66 15.90 315.13 359.43 16.00 299.20 344.01 16.10 283.18 328.42 16.20 267.07 312.67 16.30 250.89 296.80 16.40 234.65 280.82 16.50 218.39 264.75 16.60 202.16 248.62 16.70 185.98 232.45 16.80 169.90 216.28 16.90 154.26 200.13 17.00 139.77 184.17 17.10 127.42 168.72 Continues on next page... Page 2 Cnannel Routing 1 - Royder Ridge Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 17.20 119.52 154.34 17.30 114.90 142.22 17.40 110.81 132.71 17.50 107.20 125.09 17.60 103.98 118.86 17.70 101.07 113.68 17.80 98.40 109.29 17.90 95.92 105.50 18.00 93.61 102.16 18.10 91.46 99.19 18.20 89.46 96.50 18.30 87.58 94.05 18.40 85.81 91.80 18.50 84.14 89.71 18.60 82.56 87.77 18.70 81.06 85.96 18.80 79.63 84.25 18.90 78.27 82.65 19.00 76.96 81.12 19.10 75.70 79.67 19.20 74.49 78.29 19.30 73.31 76.97 19.40 72.16 75.69 19.50 71.05 74.46 19.60 69.96 73.28 19.70 68.90 72.12 19.80 67.87 71.00 19.90 66.87 69.91 20.00 65.88 68.85 20.10 64.92 67.82 20.20 63.97 66.81 20.30 63.05 65.82 20.40 62.15 64.86 20.50 61.27 63.91 20.60 60.40 62.99 20.70 59.56 62.09 20.80 58.73 61.21 20.90 57.93 60.35 21.00 57.14 59.51 21.10 56.37 58.68 21.20 55.61 57.88 21.30 54.87 57.09 21.40 54.15 56.32 21.50 53.45 55.56 21.60 52.77 54.83 21.70 52.10 54.11 21.80 51.46 53.41 21.90 50.85 52.73 22.00 50.26 52.08 Page 3 Continues on next page. Cnannel Routing 1 - Royder Ridge Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 22.10 49.69 51.44 22.20 49.15 50.83 22.30 48.63 50.25 22.40 48.13 49.68 22.50 47.66 49.14 22.60 47.21 48.63 22.70 46.78 48.13 22.80 46.37 47.66 22.90 45.98 47.21 23.00 45.60 46.78 23.10 45.25 46.37 23.20 44.91 45.98 23.30 44.59 45.61 23.40 44.28 45.25 23.50 43.99 44.91 23.60 43.71 44.59 23.70 43.44 44.28 23.80 43.19 43.99 23.90 42.94 43.71 24.00 42.71 43.44 24.10 42.41 43.19 24.20 42.06 42.92 24.30 41.63 42.62 24.40 41.15 42.27 24.50 40.60 41.88 24.60 39.98 41.43 24.70 39.30 40.93 24.80 38.55 40.36 24.90 37.74 39.73 25.00 36.86 39.04 25.10 35.91 38.28 25.20 34.89 37.45 25.30 33.81 36.56 25.40 32.66 35.61 25.50 31.44 34.58 25.60 30.15 33.49 25.70 28.79 32.32 25.80 27.37 31.10 25.90 25.88 29.80 26.00 24.32 28.44 26.10 22.82 27.00 26.20 21.36 25.55 26.30 19.96 24.09 26.40 18.60 22.65 26.50 17.29 21.24 26.60 16.04 19.87 26.70 14.83 18.53 26.80 13.67 17.24 26.90 12.56 16.00 Continues on next page... Page 4 Cnannel Routing 1 - Royder Ridge Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 27.00 11.49 14.80 27.10 10.48 13.65 27.20 9.51 12.55 27.30 8.60 11.49 27.40 7.73 10.48 27.50 6.90 9.52 27.60 6.13 8.61 27.70 5.40 7.75 27.80 4.72 6.93 27.90 4.08 6.16 Page 5 ..End Hydrograph Report Page 1 English Hyd. No. 5 Subbasin 3 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 91.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 205.87 cfs Time interval = 6 min Curve number = 70 Hydraulic length = 0 ft Time of conc. (Tc) = 122.8 min Distribution = Type II Shape factor = 484 Total Volume = 2,377,941 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 8.50 2.07 11.70 23.53 14.90 78.16 18.10 20.15 8.60 2.27 11.80 28.98 15.00 69.22 18.20 19.84 8.70 2.49 11.90 39.00 15.10 60.52 18.30 19.55 8.80 2.71 12.00 52.36 15.20 52.48 18.40 19.26 8.90 2.95 12.10 66.25 15.30 45.71 18.50 18.99 9.00 3.20 12.20 80.57 15.40 41.60 18.60 18.73 9.10 3.47 12.30 95.22 15.50 39.45 18.70 18.47 9.20 3.76 12.40 110.11 15.60 37.61 18.80 18.22 9.30 4.06 12.50 125.10 15.70 36.03 18.90 17.98 9.40 4.37 12.60 140.07 15.80 34.65 19.00 17.75 9.50 4.70 12.70 154.97 15.90 33.44 19.10 17.52 9.60 5.04 12.80 169.71 16.00 32.34 19.20 17.29 n: 9.70 5.40 12.90 183.72 16.10 31.32 19.30 17.06 9.80 5.77 13.00 195.86 16.20 30.38 19.40 16.84 9.90 6.15 13.10 204.49 16.30 29.51 19.50 16.62 10.00 6.56 13.20 205.87 << 16.40 28.69 19.60 16.39 10.10 6.98 13.30 201.92 16.50 27.93 19.70 16.17 10.20 7.43 13.40 197.07 16.60 27.21 19.80 15.94 10.30 7.90 13.50 191.43 16.70 26.54 19.90 15.72 10.40 8.41 13.60 185.14 16.80 25.90 20.00 15.49 10.50 8.94 13.70 178.33 16.90 25.30 20.10 15.27 10.60 9.52 13.80 171.13 17.00 24.73 20.20 15.05 10.70 10.15 13.90 163.62 17.10 24.19 20.30 14.82 10.80 10.84 14.00 155.83 17.20 23.69 20.40 14.61 10.90 11.60 14.10 147.79 17.30 23.21 20.50 14.39 11.00 12.43 14.20 139.54 17.40 22.76 20.60 14.18 11.10 13.34 14.30 131.10 17.50 22.33 20.70 13.97 11.20 14.35 14.40 122.52 17.60 21.93 20.80 13.77 11.30 15.50 14.50 113.80 17.70 21.54 20.90 13.58 11.40 16.80 14.60 104.97 17.80 21.17 21.00 13.39 11.50 18.28 14.70 96.07 17.90 20.81 21.10 13.21 11.60 20.30 14.80 87.12 18.00 20.48 21.20 13.04 Continues on next page... Subbasin 3 Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 21.30 12.89 26.20 2.11 21.40 12.74 21.50 12.60 21.60 12.47 End 21.70 12.35 21.80 12.24 21.90 12.13 22.00 12.03 22.10 11.94 22.20 11.86 22.30 11.78 22.40 11.71 22.50 11.64 22.60 11.58 22.70 11.52 22.80 11.46 22.90 11.41 23.00 11.36 23.10 11.31 23.20 11.27 23.30 11.22 23.40 11.18 23.50 11.13 23.60 11.09 23.70 11.04 23.80 11.00 23.90 10.96 24.00 10.91 24.10 10.82 24.20 10.69 24.30 10.51 24.40 10.29 24.50 10.02 24.60 9.71 24.70 9.36 24.80 8.96 24.90 8.52 25.00 8.03 25.10 7.51 25.20 6.94 25.30 6.32 25.40 5.74 25.50 5.19 25.60 4.66 25.70 4.17 25.80 3.70 25.90 3.26 26.00 2.85 26.10 2.46 Page 2 TR55 Tc Worksheet Hyd. No. 5 Subbasin 3 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 243.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 84.6 min Shallow Concentrated Flow Flow length = 3500 ft Watercourse slope = 0.9 % Surface description = Unpaved Average velocity = 1.53 ft/s Travel Time = 38.1 min Channel Flow Cross section flow area = 0.0 sqft Wetted perimeter = 0.0 ft Channel slope = 0.0 % Manning's n-value = 0.015 Velocity = 0.00 ft/s Flow length = 0.0 ft Travel Time = min Page 1 Total Travel Time, Tc = 122.8 min Hydrograph Report Page 1 English Hyd. No. 6 Subbasin 4 Hydrograph type = SCS Runoff Peak discharge = 394.39 cfs Storm frequency = 100 yrs Time interval = 6 min Drainage area = 239.00 ac Curve number = 65 Basin Slope = 0.0% Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 164.8 min Total precip. = 11.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Total Volume = 5,539,651 cult Hydrograph Discharge Table Time Outflow Time Outflow Time - - Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 9.50 3.98 12.70 225.56 15.90 142.48 19.10 46.37 9.60 4.47 12.80 248.14 16.00 129.10 19.20 45.70 9.70 5.00 12.90 270.72 16.10 116.03 19.30 45.05 9.80 5.57 13.00 293.23 16.20 103.86 19.40 44.41 9.90 6.17 13.10 315.57 16.30 93.45 19.50 43.79 10.00 6.82 13.20 337.65 16.40 86.85 19.60 43.18 10.10 7.51 13.30 358.72 16.50 83.12 19.70 42.58 10.20 8.26 13.40 377.26 16.60 79.86 19.80 42.00 10.30 9.06 13.50 390.96 16.70 76.99 19.90 41.42 10.40 9.91 13.60 394.39 << 16.80 74.45 20.00 40.86 10.50 10.83 13.70 390.06 16.90 72.17 20.10 40.30 10.60 11.82 13.80 384.35 17.00 70.08 20.20 39.74 10.70 12.88 13.90 377.43 17.10 68.13 20.30 39.20 10.80 14.03 14.00 369.48 17.20 66.33 20.40 38.65 10.90 15.29 14.10 360.70 17.30 64.64 20.50 38.12 11.00 16.66 14.20 351.27 17.40 63.07 20.60 37.59 11.10 18.14 14.30 341.33 17.50 61.60 20.70 37.07 11.20 19.78 14.40 330.91 17.60 60.23 20.80 36.55 11.30 21.63 14.50 320.07 17.70 58.94 20.90 36.04 11.40 23.70 14.60 308.83 17.80 57.73 21.00 35.55 11.50 26.05 14.70 297.26 17.90 56.59 21.10 35.07 11.60 29.13 14.80 285.39 18.00 55.52 21.20 34.60 11.70 33.87 14.90 273.25 18.10 54.50 21.30 34.14 11.80 41.68 15.00 260.85 18.20 53.54 21.40 33.70 11.90 55.93 15.10 248.23 18.30 52.62 21.50 33.28 12.00 75.02 15.20 235.41 18.40 51.74 21.60 32.87 12.10 94.99 15.30 222.44 18.50 50.89 21.70 32.49 12.20 115.69 15.40 209.31 18.60 50.08 21.80 32.12 12.30 136.99 15.50 196.07 18.70 49.29 21.90 31.77 12.40 158.76 15.60 182.73 18.80 48.52 22.00 31.44 12.50 180.83 15.70 169.33 18.90 47.78 22.10 31.13 12.60 203.12 15.80 155.90 19.00 47.07 22.20 30.84 Continues on next page... Subbasin 4 Hydrograph Discharge Table Time Outflow (hrs cfs) 22.30 30.56 22.40 30.29 22.50 30.04 22.60 29.81 22.70 29.58 22.80 29.37 22.90 29.18 23.00 28.99 23.10 28.81 23.20 28.64 23.30 28.48 23.40 28.33 23.50 28.19 23.60 28.05 23.70 27.92 23.80 27.80 23.90 27.68 24.00 27.56 24.10 27.38 24.20 27.14 24.30 26.83 24.40 26.46 24.50 26.02 24.60 25.52 24.70 24.96 24.80 24.33 24.90 23.63 25.00 22.88 25.10 22.06 25.20 21.17 25.30 20.23 25.40 19.22 25.50 18.15 25.60 17.01 25.70 15.82 25.80 14.67 25.90 13.56 26.00 12.50 26.10 11.49 26.20 10.51 26.30 9.59 26.40 8.70 26.50 7.86 26.60 7.07 26.70 6.31 26.80 5.61 26.90 4.94 27.00 4.32 Page 2 End TR55 Tc Worksheet Hyd. No. 6 Subbasin 4 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 285.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 96.2 min Shallow Concentrated Flow Flow length = 3000 ft Watercourse slope = 1.1 % Surface description = Unpaved Average velocity = 1.69 ft/s Travel Time = 29.5 min Channel Flow Cross section flow area = 42.0 sqft Wetted perimeter = 18.4 ft Channel slope = 0.4 % Manning's n-value = 0.200 Velocity = 0.78 ft/s Flow length = 1822.0 ft Travel Time = 39.1 min Page 1 Total Travel Time, Tc = 164.8 min Hydrograph Report Page 1 English Hyd. No. 7 Route 1 plus Sub 3 and Sub 4 Hydrograph type = Combine Peak discharge = 691.81 cfs Storm frequency = 100 yrs Time interval = 6 min 1st inflow hyd. No.= 5 2nd inflow hyd. No.= 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 8.80 2.71 4.24 6.95 8.90 2.95 4.73 7.68 9.00 3.20 5.25 8.45 9.10 3.47 5.81 9.28 9.20 3.76 6.40 10.16 9.30 4.06 7.04 11.10 9.40 4.37 7.71 12.09 9.50 4.70 8.43 13.13 9.60 5.04 9.19 14.23 9.70 5.40 9.98 15.38 9.80 5.77 10.83 16.59 9.90 6.15 11.71 17.87 10.00 6.56 12.65 19.20 10.10 6.98 13.63 20.62 10.20 7.43 14.68 22.11 10.30 7.90 15.78 23.68 10.40 8.41 16.95 25.35 10.50 8.94 18.19 27.13 10.60 9.52 19.50 29.02 10.70 10.15 20.90 31.05 10.80 10.84 22.39 33.23 10.90 11.60 23.98 35.58 11.00 12.43 25.68 38.12 11.10 13.34 27.51 40.85 11.20 14.35 29.46 43.81 11.30 15.50 31.57 47.07 11.40 16.80 33.87 50.67 11.50 18.28 36.40 54.68 11.60 20.30 39.20 59.50 11.70 23.53 42.50 66.03 11.80 28.98 46.84 75.82 11.90 39.00 53.14 92.14 12.00 52.36 63.31 115.67 12.10 66.25 77.92 144.17 12.20 80.57 95.77 176.35 12.30 95.22 116.03 211.25 Total Volume = 11,328,700 cuft Continues on next page.. Route 1 plus Sub 3 and Sub 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 12.40 110.11 138.09 12.50 125.10 161.50 12.60 140.07 185.94 12.70 154.97 211.13 12.80 169.71 236.88 12.90 183.72 263.05 13.00 195.86 289.52 13.10 204.49 316.20 13.20 205.87 << 343.01 13.30 201.92 369.85 13.40 197.07 396.65 13.50 191.43 423.30 13.60 185.14 449.70 13.70 178.33 475.46 13.80 171.13 499.70 13.90 163.62 520.91 14.00 155.83 535.98 14.10 147.79 543.97 14.20 139.54 546.80 << 14.30 131.10 545.78 14.40 122.52 541.85 14.50 113.80 535.69 14.60 104.97 527.82 14.70 96.07 518.63 14.80 87.12 508.39 14.90 78.16 497.30 15.00 69.22 485.49 15.10 60.52 473.08 15.20 52.48 460.15 15.30 45.71 446.77 15.40 41.60 432.99 15.50 39.45 418.85 15.60 37.61 404.39 15.70 36.03 389.65 15.80 34.65 374.66 15.90 33.44 359.43 16.00 32.34 344.01 16.10 31.32 328.42 16.20 30.38 312.67 16.30 29.51 296.80 16.40 28.69 280.82 16.50 27.93 264.75 16.60 27.21 248.62 16.70 26.54 232.45 16.80 25.90 216.28 16.90 25.30 200.13 17.00 24.73 184.17 17.10 24.19 168.72 17.20 23.69 154.34 Outflow cfs 248.20 286.60 326.01 366.09 406.59 446.77 485.38 520.68 548.88 571.78 593.72 614.73 634.84 653.79 670.83 684.53 691.81 << 691.76 686.34 676.89 664.37 649.49 632.79 614.70 595.52 575.46 554.71 533.60 512.63 492.48 474.59 458.30 442.00 425.68 409.31 392.87 376.35 359.74 343.05 326.31 309.52 292.68 275.83 258.98 242.17 225.43 208.90 192.91 178.03 Page 2 Continues on next page Route 1 plus Sub 3 and Sub 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 17.30 23.21 142.22 165.44 17.40 22.76 132.71 155.48 17.50 22.33 125.09 147.43 17.60 21.93 118.86 140.79 17.70 21.54 113.68 135.22 17.80 21.17 109.29 130.46 17.90 20.81 105.50 126.31 18.00 20.48 102.16 122.64 18.10 20.15 99.19 119.34 18.20 19.84 96.50 116.34 18.30 19.55 94.05 113.60 18.40 19.26 91.80 111.06 18.50 18.99 89.71 108.70 18.60 18.73 87.77 106.50 18.70 18.47 85.96 104.43 18.80 18.22 84.25 102.48 18.90 17.98 82.65 100.63 19.00 17.75 81.12 98.87 19.10 17.52 79.67 97.19 19.20 17.29 78.29 95.58 19.30 17.06 76.97 94.03 19.40 16.84 75.69 92.53 19.50 16.62 74.46 91.08 19.60 16.39 73.28 89.67 19.70 16.17 72.12 88.29 19.80 15.94 71.00 86.95 19.90 15.72 69.91 85.63 20.00 15.49 68.85 84.35 20.10 15.27 67.82 83.09 20.20 15.05 66.81 81.85 20.30 14.82 65.82 80.65 20.40 14.61 64.86 79.46 20.50 14.39 63.91 78.30 20.60 14.18 62.99 77.17 20.70 13.97 62.09 76.06 20.80 13.77 61.21 74.98 20.90 13.58 60.35 73.93 21.00 13.39 59.51 72.90 21.10 13.21 58.68 71.90 21.20 13.04 57.88 70.92 21.30 12.89 57.09 69.97 21.40 12.74 56.32 69.05 21.50 12.60 55.56 68.16 21.60 12.47 54.83 67.30 21.70 12.35 54.11 66.46 21.80 12.24 53.41 65.65 21.90 12.13 52.73 64.86 22.00 12.03 52.08 64.11 22.10 11.94 51.44 63.39 Page 3 Continues on next page Route 1 plus Sub 3 and Sub 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 22.20 11.86 50.83 22.30 11.78 50.25 22.40 11.71 49.68 22.50 11.64 49.14 22.60 11.58 48.63 22.70 11.52 48.13 22.80 11.46 47.66 22.90 11.41 47.21 23.00 11.36 46.78 23.10 11.31 46.37 23.20 11.27 45.98 23.30 11.22 45.61 23.40 11.18 45.25 23.50 11.13 44.91 23.60 11.09 44.59 23.70 11.04 44.28 23.80 11.00 43.99 23.90 10.96 43.71 24.00 10.91 43.44 24.10 10.82 43.19 24.20 10.69 42.92 24.30 10.51 42.62 24.40 10.29 42.27 24.50 10.02 41.88 24.60 9.71 41.43 24.70 9.36 40.93 24.80 8.96 40.36 24.90 8.52 39.73 25.00 8.03 39.04 25.10 7.51 38.28 25.20 6.94 37.45 25.30 6.32 36.56 25.40 5.74 35.61 25.50 5.19 34.58 25.60 4.66 33.49 25.70 4.17 32.32 25.80 3.70 31.10 25.90 3.26 29.80 26.00 2.85 28.44 26.10 2.46 27.00 26.20 2.11 25.55 26.30 1.78 24.09 26.40 1.48 22.65 26.50 1.21 21.24 26.60 0.97 19.87 26.70 0.75 18.53 26.80 0.56 17.24 26.90 0.40 16.00 27.00 0.27 14.80 Outflow cfs 62.69 62.03 61.39 60.78 60.21 59.65 59.13 58.62 58.14 57.68 57.25 56.83 56.43 56.05 55.68 55.33 54.99 54.66 54.35 54.01 53.61 53.13 52.56 51.90 51.14 50.28 49.32 48.25 47.07 45.78 44.39 42.89 41.35 39.77 38.15 36.49 34.79 33.06 31.28 29.47 27.66 25.87 24.14 22.45 20.84 19.29 17.81 16.40 15.07 Page 4 Continues on next page Route 1 plus Sub 3 and Sub 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 27.10 0.16 13.65 27.20 0.08 12.55 27.30 0.03 11.49 27.40 0.00 10.48 27.50 0.00 9.52 27.60 0.00 8.61 27.70 0.00 7.75 27.80 0.00 6.93 Outflow cfs 13.81 12.63 11.52 10.48 9.52 8.61 7.75 6.93 Page 5 End Hydrograph Report Hyd. No. 8 Combine Sub 4 with Sub 3 and Reach 1 Hydrograph type = Combine Storm frequency = 100 yrs 1 st inflow hyd. No.= 6 Page 1 English Peak discharge = 1061.96 cfs Time interval = 6 min 2nd inflow hyd. No: 7 Total Volume = 16,868,340 cuft Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 9.10 2.35 9.28 9.20 2.71 10.16 9.30 3.10 11.10 9.40 3.53 12.09 9.50 3.98 13.13 9.60 4.47 14.23 9.70 5.00 15.38 9.80 5.57 16.59 9.90 6.17 17.87 10.00 6.82 19.20 10.10 7.51 20.62 10.20 8.26 22.11 10.30 9.06 23.68 10.40 9.91 25.35 10.50 10.83 27.13 10.60 11.82 29.02 10.70 12.88 31.05 10.80 14.03 33.23 10.90 15.29 35.58 11.00 16.66 38.12 11.10 18.14 40.85 11.20 19.78 43.81 11.30 21.63 47.07 11.40 23.70 50.67 11.50 26.05 54.68 11.60 29.13 59.50 11.70 33.87 66.03 11.80 41.68 75.82 11.90 55.93 92.14 12.00 75.02 115.67 12.10 94.99 144.17 12.20 115.69 176.35 12.30 136.99 211.25 12.40 158.76 248.20 12.50 180.83 286.60 12.60 203.12 326.01 Outflow cfs 11.63 12.87 14.20 15.61 17.11 18.70 20.38 22.16 24.04 26.02 28.13 30.36 32.74 35.26 37.96 40.84 43.93 47.26 50.87 54.77 58.98 63.59 68.70 74.38 80.74 88.63 99.90 117.50 148.07 190.69 239.16 292.03 348.24 406.96 467.43 529.12 Continues on next page Combine Sub 4 with Sub 3 and Reach 1 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 12.70 225.56 366.09 591.65 12.80 248.14 406.59 654.73 12.90 270.72 446.77 717.49 13.00 293.23 485.38 778.60 13.10 315.57 520.68 836.25 13.20 337.65 548.88 886.53 13.30 358.72 571.78 930.50 13.40 377.26 593.72 970.98 13.50 390.96 614.73 1005.69 13.60 394.39 << 634.84 1029.23 13.70 390.06 653.79 1043.85 13.80 384.35 670.83 1055.18 ' 13.90 377.43 684.53 1061.96 << 14.00 369.48 691.81 << 1061.29 14.10 360.70 691.76 1052.46 14.20 351.27 686.34 1037.61 14.30 341.33 676.89 1018.22 14.40 330.91 664.37 995.28 14.50 320.07 649.49 969.56 14.60 308.83 632.79 941.63 14.70 297.26 614.70 911.96 14.80 285.39 595.52 880.91 14.90 273.25 575.46 848.71 15.00 260.85 554.71 815.56 15.10 248.23 533.60 781.83 15.20 235.41 512.63 748.05 15.30 222.44 492.48 714.92 15.40 209.31 474.59 683.91 15.50 196.07 458.30 654.38 15.60 182.73 442.00 624.73 15.70 169.33 425.68 595.01 15.80 155.90 409.31 565.21 15.90 142.48 392.87 535.36 16.00 129.10 376.35 505.45 16.10 116.03 359.74 475.77 16.20 103.86 343.05 446.91 16.30 93.45 326.31 419.76 Y 16.40 86.85 309.52 396.37 16.50 83.12 292.68 375.81 16.60 79.86 275.83 355.69 16.70 76.99 258.98 335.97 16.80 74.45 242.17 316.62 16.90 72.17 225.43 297.60 17.00 70.08 208.90 278.97 17.10 68.13 192.91 261.04 17.20 66.33 178.03 244.36 17.30 64.64 165.44 230.08 17.40 63.07 155.48 218.55 17.50 61.60 147.43 209.03 Continues on next page... Page 2 Combine Sub 4 with Sub 3 and Reach 1 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 17.60 60.23 140.79 201.02 17.70 58.94 135.22 194.16 17.80 57.73 130.46 188.19 17.90 56.59 126.31 182.91 18.00 55.52 122.64 178.16 18.10 54.50 119.34 173.85 18.20 53.54 116.34 169.88 18.30 52.62 113.60 166.22 40 18 51.74 111.06 162.80 . 18.50 50.89 108.70 159.60 18.60 50.08 106.50 156.58 18.70 49.29 104.43 153.72 18.80 48.52 102.48 151.00 18.90 47.78 100.63 148.41 19.00 47.07 98.87 145.94 19.10 46.37 97.19 143.56 19.20 45.70 95.58 141.28 19.30 45.05 94.03 139.08 19.40 44.41 92.53 136.94 19.50 43.79 91.08 134.87 19.60 43.18 89.67 132.85 19.70 42.58 88.29 130.87 19.80 42.00 86.95 128.95 19.90 41.42 85.63 127.06 20.00 40.86 84.35 125.20 20.10 40.30 83.09 123.38 20.20 39.74 81.85 121.60 20.30 39.20 80.65 119.84 20.40 38.65 79.46 118.12 20.50 38.12 78.30 116.42 20.60 37.59 77.17 114.76 20.70 37.07 76.06 113.13 20.80 36.55 74.98 111.53 20.90 36.04 73.93 109.97 21.00 35.55 72.90 108.45 21.10 35.07 71.90 106.96 21.20 34.60 70.92 105.52 21.30 34.14 69.97 104.12 21.40 33.70 69.05 102.76 21.50 33.28 68.16 101.44 21.60 32.87 67.30 100.17 21.70 32.49 66.46 98.95 21.80 32.12 65.65 97.77 21.90 31.77 64.86 96.64 22.00 31.44 64.11 95.55 22.10 31.13 63.39 94.52 22.20 30.84 62.69 93.53 22.30 30.56 62.03 92.58 22.40 30.29 61.39 91.68 Continues on next page... Page 3 Combine Sub 4 with Sub 3 and Reach 1 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 22.50 30.04 60.78 90.83 22.60 29.81 60.21 90.01 22.70 29.58 59.65 89.24 22.80 29.37 59.13 88.50 22.90 29.18 58.62 87.80 23.00 28.99 58.14 87.13 23.10 28.81 57.68 86.49 23.20 28.64 57.25 85.89 30 23 28.48 56.83 85.31 . 23.40 28.33 56.43 84.76 23.50 28.19 56.05 84.24 23.60 28.05 55.68 83.73 23.70 27.92 55.33 83.25 23.80 27.80 54.99 82.79 23.90 27.68 54.66 82.34 24.00 27.56 54.35 81.91 24.10 27.38 54.01 81.39 24.20 27.14 53.61 80.74 24.30 26.83 53.13 79.96 24.40 26.46 52.56 79.02 24.50 26.02 51.90 77.93 24.60 25.52 51.14 76.67 24.70 24.96 50.28 75.24 24.80 24.33 49.32 73.65 24.90 23.63 48.25 71.88 25.00 22.88 47.07 69.95 25.10 22.06 45.78 67.84 25.20 21.17 44.39 65.56 25.30 20.23 42.89 63.11 25.40 19.22 41.35 60.56 25.50 18.15 39.77 57.91 25.60 17.01 38.15 55.16 25.70 15.82 36.49 52.31 25.80 14.67 34.79 49.46 25.90 13.56 33.06 46.62 26.00 12.50 31.28 43.78 26.10 11.49 29.47 40.95 26.20 10.51 27.66 38.17 26.30 9.59 25.87 35.46 26.40 8.70 24.14 32.84 26.50 7.86 22.45 30.32 26.60 7.07 20.84 27.90 26.70 6.31 19.29 25.60 26.80 5.61 17.81 23.41 26.90 4.94 16.40 21.34 27.00 4.32 15.07 19.38 27.10 3.73 13.81 17.55 27.20 3.20 12.63 15.82 27.30 2.70 11.52 14.22 Continues on next page... Page 4 Combine Sub 4 with Sub 3 and Reach 1 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 27.40 2.25 10.48 27.50 1.84 9.52 ...End Outflow cfs 12.73 11.36 Page 5 Hydrograph Report Hyd. No. 11 Channel Reach 2 Hydrograph type = Reach Storm frequency = 100 yrs Inflow hyd. No. = 8 Reach length = 3214.0 ft Manning's n = 0.200 Side slope = 1.0:1 Rating curve x = 0.139 Ave. velocity = 5.30 ft/s Modified Att-Kin routin g method used. Hydrograph Discharge Table Time Inflow O utflow (hrs) cfs cfs 9.20 12.87 10.88 9.30 14.20 12.06 9.40 15.61 13.33 9.50 17.11 14.69 9.60 18.70 16.13 9.70 20.38 17.66 9.80 22.16 19.28 9.90 24.04 20.99 10.00 26.02 22.80 10.10 28.13 24.72 10.20 30.36 26.75 10.30 32.74 28.90 10.40 35.26 31.18 10.50 37.96 33.61 10.60 40.84 36.19 10.70 43.93 38.95 10.80 47.26 41.91 10.90 50.87 45.09 11.00 54.77 48.52 11.10 58.98 52.24 11.20 63.59 56.25 11.30 68.70 60.61 11.40 74.38 65.42 11.50 80.74 70.74 11.60 88.63 76.68 11.70 99.90 83.78 11.80 117.50 93.36 11.90 148.07 107.71 12.00 190.69 131.69 12.10 239.16 166.76 12.20 292.03 209.79 12.30 348.24 258.67 Continues on next page... Peak discharge Time interval Section type Channel slope Bottom width Max. depth Rating curve m Routing coeff. Page 1 English = 1058.75 cfs = 6 min = Trapezoidal = 0.3% = 5.0 ft = 4.0 ft = 1.425 = 0.5943 Total Volume = 16,868,340 cuft Channel Reach 2 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 12.40 406.96 311.90 12.50 467.43 368.39 12.60 529.12 427.25 12.70 591.65 487.80 12.80 654.73 549.52 12.90 717.49 612.04 13.00 778.60 674.71 13.10 836.25 736.45 13.20 886.53 795.76 13.30 930.50 849.71 13.40 970.98 897.72 13.50 1005.69 941.26 13.60 1029.23 979.55 13.70 1043.85 1009.07 13.80 1055.18 1029.74 13.90 1061.96 << 1044.86 14.00 1061.29 1055.02 14.10 1052.46 1058.75 << 14.20 1037.61 1055.01 14.30 1018.22 1044.67 14.40 995.28 1028.95 14.50 969.56 1008.94 14.60 941.63 985.53 14.70 911.96 959.44 14.80 880.91 931.22 14.90 848.71 901.32 15.00 815.56 870.05 15.10 781.83 837.67 15.20 748.05 804.48 15.30 714.92 770.94 15.40 683.91 737.65 15.50 654.38 705.71 15.60 624.73 675.20 15.70 595.01 645.21 15.80 565.21 615.37 15.90 535.36 585.56 16.00 505.45 555.73 16.10 475.77 525.85 16.20 446.91 496.09 16.30 419.76 466.86 16.40 396.37 438.87 16.50 375.81 413.61 16.60 355.69 391.14 16.70 335.97 370.07 16.80 316.62 349.81 16.90 297.60 330.08 17.00 278.97 310.78 17.10 261.04 291.88 17.20 244.36 273.55 Page 2 Continues on next page Channel Reach 2 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 17.30 230.08 256.20 17.40 218.55 240.68 17.50 209.03 227.53 17.60 201.02 216.53 17.70 194.16 207.31 17.80 188.19 199.49 17.90 182.91 192.77 18.00 178.16 186.91 18.10 173.85 181.71 18.20 169.88 177.04 18.30 166.22 172.79 18.40 162.80 168.88 18.50 159.60 165.27 18.60 156.58 161.90 18.70 153.72 158.74 18.80 151.00 155.75 18.90 148.41 152.93 19.00 145.94 150.24 19.10 143.56 147.68 19.20 141.28 145.24 19.30 139.08 142.88 19.40 136.94 140.62 19.50 134.87 138.43 19.60 132.85 136.31 19.70 130.87 134.25 19.80 128.95 132.24 19.90 127.06 130.28 20.00 125.20 128.37 20.10 123.38 126.49 20.20 121.60 124.64 20.30 119.84 122.83 20.40 118.12 121.06 20.50 116.42 119.31 20.60 114.76 117.59 20.70 113.13 115.91 20.80 111.53 114.26 20.90 109.97 112.64 21.00 108.45 111.05 21.10 106.96 109.50 21.20 105.52 107.99 21.30 104.12 106.52 21.40 102.76 105.09 21.50 101.44 103.70 21.60 100.17 102.36 21.70 98.95 101.06 21.80 97.77 99.80 21.90 96.64 98.59 22.00 95.55 97.43 22.10 94.52 96.32 Continues on next page... Page 3 Channel Reach 2 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 22.20 93.53 95.25 22.30 92.58 94.23 22.40 91.68 93.25 22.50 90.83 92.32 22.60 90.01 91.43 22.70 89.24 90.59 22.80 88.50 89.79 22.90 87.80 89.02 23.00 87.13 88.29 23.10 86.49 87.60 23.20 85.89 86.94 23.30 85.31 86.32 23.40 84.76 85.72 23.50 84.24 85.15 23.60 83.73 84.61 23.70 83.25 84.09 23.80 82.79 83.59 23.90 82.34 83.11 24.00 81.91 82.66 24.10 81.39 82.22 24.20 80.74 81.73 24.30 79.96 81.14 24.40 79.02 80.44 24.50 77.93 79.60 24.60 76.67 78.60 24.70 75.24 77.45 24.80 73.65 76.14 24.90 71.88 74.66 25.00 69.95 73.01 25.10 67.84 71.19 25.20 65.56 69.20 25.30 63.11 67.04 25.40 60.56 64.71 25.50 57.91 62.24 25.60 55.16 59.67 25.70 52.31 56.99 25.80 49.46 54.21 25.90 46.62 51.39 26.00 43.78 48.55 26.10 40.95 45.72 26.20 38.17 42.89 26.30 35.46 40.08 26.40 32.84 37.34 26.50 30.32 34.66 26.60 27.90 32.08 26.70 25.60 29.60 26.80 23.41 27.22 26.90 21.34 24.96 27.00 19.38 22.81 Page 4 Continues on next page. Channel Reach 2 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 27.10 17.55 20.77 27.20 15.82 18.85 27.30 14.22 17.05 27.40 12.73 15.37 27.50 11.36 13.80 27.60 10.08 12.35 27.70 8.89 11.00 Page 5 End Hydrograph Report Page 1 English Hyd. No. 10 Subbasin 6 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 163.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = Time interval = Curve number = Hydraulic length = Time of conc. (Tc) _ Distribution = Shape factor = 403.21 cfs 6 min 75 Oft 122.0764 min Type II 484 Total Volume = 4,667,330 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7 60 4 20 10.80 26.40 14.00 301.41 17.20 44.08 . 7 70 . 4.55 10.90 27.98 14.10 285.41 17.30 43.19 . 80 7 4.92 11.00 29.72 14.20 269.03 17.40 42.35 . 90 7 29 5 11.10 31.60 14.30 252.34 17.50 41.54 . 00 8 . 5.67 11.20 33.71 14.40 235.39 17.60 40.78 . 10 8 05 6 11.30 36.08 14.50 218.23 17.70 40.05 . 20 8 . 6.45 11.40 38.78 14.60 200.87 17.80 39.35 . 30 8 86 6 11.50 41.83 14.70 183.41 17.90 38.69 . 40 8 . 7.28 11.60 45.97 14.80 165.90 18.00 38.06 . 50 8 71 7 11.70 52.57 14.90 148.41 18.10 37.45 . 60 8 . 8.17 11.80 63.58 15.00 130.99 18.20 36.87 . 70 8 64 8 11.90 83.41 15.10 114.10 18.30 36.32 . 80 8 . 13 9 12.00 109.55 15.20 98.58 18.40 35.79 . 90 8 . 9.66 12.10 136.64 15.30 85.61 18.50 35.27 . 00 9 10.21 12.20 164.49 15.40 77.82 18.60 34.78 . 10 9 10.79 12.30 192.90 15.50 73.76 18.70 34.30 . 20 9 11.41 12.40 221.72 15.60 70.28 18.80 33.84 . 30 9 12.06 12.50 250.64 15.70 67.29 18.90 33.38 . 40 9 12.73 12.60 279.46 15.80 64.70 19.00 32.94 . 50 9 13.44 12.70 308.06 15.90 62.42 19.10 32.51 . 60 9 14.17 12.80 336.28 16.00 60.34 19.20 32.09 . 70 9 14.93 12.90 362.92 16.10 58.43 19.30 31.66 . 80 9 15.73 13.00 385.71 16.20 56.66 19.40 31.25 . 90 9 16.55 13.10 401.50 16.30 55.02 19.50 30.83 . 00 10 17.41 13.20 403.21 << 16.40 53.48 19.60 30.41 . 10 10 18.31 13.30 394.78 16.50 52.05 19.70 29.99 . 20 10 19.26 13.40 384.65 16.60 50.70 19.80 29.57 . 30 10 20.25 13.50 373.06 16.70 49.43 19.90 29.15 . 40 10 21.31 13.60 360.26 16.80 48.23 20.00 28.73 . 50 10 22.43 13.70 346.49 16.90 47.10 20.10 28.31 . 60 10 23.64 13.80 332.00 17.00 46.04 20.20 27.90 . 10.70 24.95 13.90 316.96 17.10 45.03 20.30 27.48 Continues on next page... Subbasin 6 Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 20.40 27.07 20.50 26.67 20.60 26.28 20.70 25.89 20.80 25.52 20.90 25.16 21.00 24.81 21.10 24.48 21.20 24.17 21.30 23.87 21.40 23.59 21.50 23.33 21.60 23.09 21.70 22.87 21.80 22.66 21.90 22.46 22.00 22.28 22.10 22.11 22.20 21.95 22.30 21.81 22.40 21.67 22.50 21.55 22.60 21.43 22.70 21.32 22.80 21.21 22.90 21.11 23.00 21.02 23.10 20.93 23.20 20.84 23.30 20.76 23.40 20.67 23.50 20.59 23.60 20.51 23.70 20.43 23.80 20.34 23.90 20.26 24.00 20.18 24.10 20.01 24.20 19.76 24.30 19.43 24.40 19.02 24.50 18.53 24.60 17.95 24.70 17.30 24.80 16.56 24.90 15.74 25.00 14.85 25.10 13.87 25.20 12.82 25.30 11.69 25.40 10.61 25.50 9.59 25.60 8.62 25.70 7.70 25.80 6.83 25.90 6.02 26.00 5.26 26.10 4.55 End Page 2 TR55 Tc Worksheet Hyd. No. 10 Subbasin 6 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 222.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 78.7 min Shallow Concentrated Flow Flow length = 4400 ft Watercourse slope = 1.1 % Surface description = Unpaved Average velocity = 1.69 ft/s Travel Time = 43.3 min Channel Flow Cross section flow area Wetted perimeter Channel slope Manning's n-value Velocity Flow length = 0.0 sqft = 0.0 ft = 0.0 % = 0.100 = 0.00 ft/s = 0.0 ft Travel Time = min Page 1 Total Travel Time, Tc = 122.1 min Hydrograph Report Hyd. No. 15 Combine sub 6 and reach2 Hydrograph type = Combine Storm frequency = 100 yrs 1 st inflow hyd. No. = 10 Page 1 English Peak discharge = 1361.82 cfs Time interval = 6 min 2nd inflow hyd. No.= 11 Total Volume = 21,535,680 cult Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow (hrs) cfs cfs 8.70 8.64 6.17 8.80 9.13 6.96 8.90 9.66 7.82 9.00 10.21 8.76 9.10 10.79 9.78 9.20 11.41 10.88 9.30 12.06 12.06 9.40 12.73 13.33 9.50 13.44 14.69 9.60 14.17 16.13 9.70 14.93 17.66 9.80 15.73 19.28 9.90 16.55 20.99 10.00 17.41 22.80 10.10 18.31 24.72 10.20 19.26 26.75 10.30 20.25 28.90 10.40 21.31 31.18 10.50 22.43 33.61 10.60 23.64 36.19 10.70 24.95 38.95 10.80 26.40 41.91 10.90 27.98 45.09 11.00 29.72 48.52 11.10 31.60 52.24 11.20 33.71 56.25 11.30 36.08 60.61 11.40 38.78 65.42 11.50 41.83 70.74 11.60 45.97 76.68 11.70 52.57 83.78 11.80 63.58 93.36 11.90 83.41 107.71 12.00 109.55 131.69 12.10 136.64 166.76 12.20 164.49 209.79 Outflow cfs 14.81 16.09 17.48 18.97 20.57 22.29 24.12 26.07 28.13 30.30 32.59 35.00 37.54 40.21 43.03 46.00 49.15 52.49 56.04 59.83 63.91 68.31 73.07 78.25 83.84 89.95 96.70 104.19 112.57 122.65 136.35 156.94 191.12 241.24 303.40 374.27 Continues on next page.. Combine sub 6 and reach2 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 12.30 192.90 258.67 451.56 12.40 221.72 311.90 533.62 12.50 250.64 368.39 619.04 12.60 279.46 427.25 706.72 12.70 308.06 487.80 795.85 12.80 336.28 549.52 885.80 12.90 362.92 612.04 974.96 13.00 385.71 674.71 1060.42 13.10 401.50 736.45 1137.95 13.20 403.21 << 795.76 1198.98 13.30 394.78 849.71 1244.49 13.40 384.65 897.72 1282.37 13.50 373.06 941.26 1314.32 13.60 360.26 979.55 1339.81 13.70 346.49 1009.07 1355.56 13.80 332.00 1029.74 1361.75 13.90 316.96 1044.86 1361.82 << 14.00 301.41 1055.02 1356.43 14.10 285.41 1058.75 << 1344.16 14.20 269.03 1055.01 1324.04 14.30 252.34 1044.67 1297.01 14.40 235.39 1028.95 1264.34 14.50 218.23 1008.94 1227.17 14.60 200.87 985.53 1186.41 14.70 183.41 959.44 1142.85 14.80 165.90 931.22 1097.13 14.90 148.41 901.32 1049.73 15.00 130.99 870.05 1001.04 15.10 114.10 837.67 951.77 15.20 98.58 804.48 903.06 15.30 85.61 770.94 856.55 15.40 77.82 737.65 815.47 15.50 73.76 705.71 779.47 15.60 70.28 675.20 745.48 15.70 67.29 645.21 712.50 15.80 64.70 615.37 680.07 15.90 62.42 585.56 647.98 16.00 60.34 555.73 616.07 16.10 58.43 525.85 584.28 16.20 56.66 496.09 552.75 16.30 55.02 466.86 521.88 16.40 53.48 438.87 492.35 16.50 52.05 413.61 465.66 16.60 50.70 391.14 441.84 16.70 49.43 370.07 419.50 16.80 48.23 349.81 398.04 16.90 47.10 330.08 377.19 17.00 46.04 310.78 356.82 17.10 45.03 291.88 336.91 Page 2 Continues on next page... Combine sub 6 and reach2 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 17.20 44.08 273.55 317.64 17.30 43.19 256.20 299.39 17.40 42.35 240.68 283.02 17.50 41.54 227.53 269.07 17.60 40.78 216.53 257.31 17.70 40.05 207.31 247.36 17.80 39.35 199.49 238.85 17.90 38.69 192.77 231.47 18.00 38.06 186.91 224.97 18.10 37.45 181.71 219.16 18.20 36.87 177.04 213.91 18.30 36.32 172.79 209.10 18.40 35.79 168.88 204.67 18.50 35.27 165.27 200.54 18.60 34.78 161.90 196.68 18.70 34.30 158.74 193.04 18.80 33.84 155.75 189.59 18.90 33.38 152.93 186.31 19.00 32.94 150.24 183.19 19.10 32.51 147.68 180.20 19.20 32.09 145.24 177.32 19.30 31.66 142.88 174.55 19.40 31.25 140.62 171.87 19.50 30.83 138.43 169.26 19.60 30.41 136.31 166.72 19.70 29.99 134.25 164.24 19.80 29.57 132.24 161.82 19.90 29.15 130.28 159.44 20.00 28.73 128.37 157.10 20.10 28.31 126.49 154.80 20.20 27.90 124.64 152.54 20.30 27.48 122.83 150.32 20.40 27.07 121.06 148.13 20.50 26.67 119.31 145.98 20.60 26.28 117.59 143.87 20.70 25.89 115.91 141.80 20.80 25.52 114.26 139.78 20.90 25.16 112.64 137.80 21.00 24.81 111.05 135.86 21.10 24.48 109.50 133.98 21.20 24.17 107.99 132.16 21.30 23.87 106.52 130.39 21.40 23.59 105.09 128.69 21.50 23.33 103.70 127.04 21.60 23.09 102.36 125.45 21.70 22.87 101.06 123.93 21.80 22.66 99.80 122.46 21.90 22.46 98.59 121.06 22.00 22.28 97.43 119.71 Page 3 Continues on next page Combine sub 6 and reach2 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 22.10 22.11 96.32 118.43 22.20 21.95 95.25 117.20 22.30 21.81 94.23 116.03 22.40 21.67 93.25 114.92 22.50 21.55 92.32 113.86 22.60 21.43 91.43 112.86 22.70 21.32 90.59 111.90 22.80 21.21 89.79 111.00 22.90 21.11 89.02 110.13 23.00 21.02 88.29 109.31 23.10 20.93 87.60 108.53 23.20 20.84 86.94 107.79 23.30 20.76 86.32 107.08 23.40 20.67 85.72 106.40 23.50 20.59 85.15 105.74 23.60 20.51 84.61 105.12 23.70 20.43 84.09 104.51 23.80 20.34 83.59 103.93 23.90 20.26 83.11 103.37 24.00 20.18 82.66 102.83 24.10 20.01 82.22 102.23 24.20 19.76 81.73 101.49 24.30 19.43 81.14 100.57 24.40 19.02 80.44 99.46 24.50 18.53 79.60 98.12 24.60 17.95 78.60 96.56 24.70 17.30 77.45 94.75 24.80 16.56 76.14 92.70 24.90 15.74 74.66 90.40 25.00 14.85 73.01 87.86 25.10 13.87 71.19 85.06 25.20 12.82 69.20 82.02 25.30 11.69 67.04 78.73 25.40 10.61 64.71 75.32 25.50 9.59 62.24 71.83 25.60 8.62 59.67 68.29 25.70 7.70 56.99 64.69 25.80 6.83 54.21 61.04 25.90 6.02 51.39 57.41 26.00 5.26 48.55 53.81 26.10 4.55 45.72 50.27 26.20 3.90 42.89 46.78 26.30 3.29 40.08 43.38 26.40 2.74 37.34 40.08 26.50 2.24 34.66 36.90 26.60 1.79 32.08 33.87 26.70 1.39 29.60 30.99 26.80 1.04 27.22 28.26 26.90 0.74 24.96 25.70 Page 4 Continues on next page... Combine sub 6 and reach2 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 27.00 0.49 22.81 23.30 27.10 0.30 20.77 21.07 27.20 0.15 18.85 19.00 27.30 0.05 17.05 17.10 27.40 0.00 15.37 15.37 27.50 0.00 13.80 13.80 Page 5 End Hydrograph Report Page 1 English Hyd. No. 16 Route Reach 3 Hydrograph type Storm frequency Inflow hyd. No. Reach length Manning's n Side slope Rating curve x Ave. velocity = Reach = 100 yrs = 15 = 1676.0 ft = 0.200 = 1.0:1 = 0.161 = 8.61 ft/s Modified Att-Kin routing method used. Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 10.30 49.15 10.40 52.49 10.50 56.04 10.60 59.83 10.70 63.91 10.80 68.31 10.90 73.07 11.00 78.25 11.10 83.84 11.20 89.95 11.30 96.70 11.40 104.19 11.50 112.57 11.60 122.65 11.70 136.35 11.80 156.94 11.90 191.12 12.00 241.24 12.10 303.40 12.20 374.27 12.30 451.56 12.40 533.62 12.50 619.04 12.60 706.72 12.70 795.85 12.80 885.80 12.90 974.96 13.00 1060.42 13.10 1137.95 13.20 1198.98 13.30 1244.49 13.40 1282.37 33.41 48.76 52.69 56.28 60.10 64.19 68.61 73.41 78.61 84.23 90.38 97.17 104.72 113.16 123.37 137.34 158.44 193.64 244.89 307.82 379.27 456.98 539.36 624.98 712.81 802.04 892.03 981.12 1039.89 1080.78 1128.66 1175.04 Peak discharge Time interval Section type Channel slope Bottom width Max. depth Rating curve m Routing coeff. = 1348.97 cfs = 6 min = Trapezoidal = 0.4% = 5.0 ft = 5.0 ft = 1.421 = 1.1357 Total Volume = 21,535,670 cult Continues on next page... Route Reach 3 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 13.50 1314.32 1218.02 13.60 1339.81 1256.54 13.70 1355.56 1289.86 13.80 1361.75 1315.97 13.90 1361.82 << 1333.93 14.00 1356.43 1344.70 14.10 1344.16 1348.97 << 14.20 1324.04 1346.50 14.30 1297.01 1336.83 14.40 1264.34 1320.12 14.50 1227.17 1296.98 14.60 1186.41 1268.20 14.70 1142.85 1234.81 14.80 1097.13 1197.38 14.90 1049.73 1156.81 15.00 1001.04 1113.61 15.10 951.77 1068.40 15.20 903.06 1020.80 15.30 856.55 903.16 15.40 815.47 853.52 15.50 779.47 812.69 15.60 745.48 777.03 15.70 712.50 743.15 15.80 680.07 710.23 15.90 647.98 677.83 16.00 616.07 645.76 16.10 584.28 613.86 16.20 552.75 582.08 16.30 521.88 550.57 16.40 492.35 519.75 16.50 465.66 490.32 16.60 441.84 463.84 16.70 419.50 440.22 16.80 398.04 417.97 16.90 377.19 396.56 17.00 356.82 375.75 17.10 336.91 355.41 17.20 317.64 335.54 17.30 299.39 316.31 17.40 283.02 298.14 17.50 269.07 281.91 17.60 257.31 268.13 17.70 247.36 256.52 17.80 238.85 246.69 17.90 231.47 238.27 18.00 224.97 230.97 18.10 219.16 224.53 18.20 213.91 218.77 18.30 209.10 213.55 Page 2 Continues on next page... Route Reach 3 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 18.40 204.67 208.78 18.50 200.54 204.37 18.60 196.68 200.26 18.70 193.04 196.41 18.80 189.59 192.79 18.90 186.31 189.35 19.00 183.19 186.09 19.10 180.20 182.97 19.20 177.32 179.99 19.30 174.55 177.12 19.40 171.87 174.36 19.50 169.26 171.68 19.60 166.72 169.08 19.70 164.24 166.55 19.80 161.82 164.07 19.90 159.44 161.65 20.00 157.10 159.27 20.10 154.80 156.94 20.20 152.54 154.64 20.30 150.32 152.38 20.40 148.13 150.16 20.50 145.98 147.98 20.60 143.87 145.83 20.70 141.80 143.73 20.80 139.78 141.66 20.90 137.80 139.64 21.00 135.86 137.66 21.10 133.98 135.73 21.20 132.16 133.85 21.30 130.39 132.03 21.40 128.69 130.27 21.50 127.04 128.57 21.60 125.45 126.93 21.70 123.93 125.34 21.80 122.46 123.82 21.90 121.06 122.36 22.00 119.71 120.96 22.10 118.43 119.62 22.20 117.20 118.34 22.30 116.03 117.12 22.40 114.92 115.95 22.50 113.86 114.84 22.60 112.86 113.79 22.70 111.90 112.79 22.80 111.00 111.84 22.90 110.13 110.93 23.00 109.31 110.07 23.10 108.53 109.26 23.20 107.79 108.48 Page 3 Continues on next page... Route Reach 3 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 23.30 107.08 107.74 23.40 106.40 107.03 23.50 105.74 106.35 23.60 105.12 105.70 23.70 104.51 105.07 23.80 103.93 104.47 23.90 103.37 103.89 24.00 102.83 103.33 24.10 102.23 102.79 24.20 101.49 102.18 24.30 100.57 101.43 24.40 99.46 100.51 24.50 98.12 99.38 24.60 96.56 98.03 24.70 94.75 96.44 24.80 92.70 94.62 24.90 90.40 92.55 25.00 87.86 90.24 25.10 85.06 87.68 25.20 82.02 84.87 25.30 78.73 81.81 25.40 75.32 78.50 25.50 71.83 75.08 25.60 68.29 71.59 25.70 64.69 68.04 25.80 61.04 64.44 25.90 57.41 60.79 26.00 53.81 57.16 26.10 50.27 53.57 26.20 46.78 50.03 26.30 43.38 46.54 26.40 40.08 43.14 26.50 36.90 39.85 26.60 33.87 36.68 26.70 30.99 33.66 26.80 28.26 30.79 26.90 25.70 28.08 27.00 23.30 25.52 27.10 21.07 23.14 27.20 19.00 20.92 27.30 17.10 18.86 27.40 15.37 16.97 27.50 13.80 15.25 27.60 12.35 13.69 Page 4 End Hydrograph Report Peak discharge Time interval Reservoir name Max. Storage English Hyd. No. 17 Railroad Pond Hydrograph type = Reservoir Storm frequency = 100 yrs Inflow hyd. No. = 16 Max. Elevation = 294.57 ft Storage Indication method used. Hydrograph Discharge Table Time Inflow (hrs) cfs 9.40 0.00 9.50 0.00 9.60 0.00 9.70 0.00 9.80 0.00 9.90 0.00 10.00 0.00 10.10 0.00 10.20 0.00 10.30 33.41 10.40 48.76 10.50 52.69 10.60 56.28 10.70 60.10 10.80 64.19 10.90 68.61 11.00 73.41 11.10 78.61 11.20 84.23 11.30 90.38 11.40 97.17 11.50 104.72 11.60 113.16 11.70 123.37 11.80 137.34 11.90 158.44 12.00 193.64 12.10 244.89 12.20 307.82 12.30 379.27 12.40 456.98 12.50 539.36 12.60 624.98 12.70 712.81 12.80 802.04 12.90 892.03 Page 1 = 1491.97 cfs = 6 min = Railroad Pond = 243,957 cuft Total Volume = 22,953,030 cuft Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 292.94 23.10 9.60 32.70 292.93 17.47 7.26 24.74 292.94 25.53 10.60 36.15 292.93 21.38 8.88 30.28 292.94 28.46 11.82 40.26 292.94 25.55 10.61 36.15 292.95 31.82 13.22 45.04 292.95 29.98 12.45 42.44 292.95 35.69 14.82 50.52 292.95 34.79 14.45 49.25 292.96 40.10 16.66 56.76 292.96 40.06 16.64 56.70 292.97 45.15 18.75 63.89 292.97 45.91 19.07 64.98 292.98 50.96 21.17 72.11 292.98 52.56 21.83 74.39 292.99 57.77 24.00 81.76 292.99 60.28 25.04 85.32 293.00 65.87 27.36 93.21 293.01 69.34 28.80 98.14 293.02 75.51 31.36 106.87 293.02 80.24 33.33 113.57 293.03 87.47 36.33 123.79 293.04 94.00 39.05 133.04 293.06 104.12 43.25 147.36 293.08 117.29 48.72 166.00 293.11 140.07 58.18 198.27 293.17 175.80 73.02 248.82 293.24 225.36 93.61 318.97 293.33 281.19 116.80 397.98 293.42 342.79 142.38 485.16 293.52 407.19 169.14 576.32 293.62 474.78 197.21 672.00 293.73 543.46 225.74 769.20 293.83 613.70 254.91 868.61 293.94 683.99 284.11 968.11 Continues on next page... Railroad Pond Hydrograph Discharge Table Page 2 Time Inflow Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 13.00 981.12 294.02 730.21 310.41 1040.62 13.10 1039.89 294.10 756.11 344.29 1100.40 13.20 1080.78 294.20 791.53 394.90 1186.44 13.30 1128.66 294.30 824.57 446.48 1271.05 13.40 1175.04 294.39 851.02 490.98 1342.00 13.50 1218.02 294.45 870.13 525.06 1395.19 13.60 1256.54 294.50 884.07 550.24 1434.32 13.70 1289.86 294.53 894.16 569.67 1463.82 13.80 1315.97 294.56 900.79 582.46 1483.24 13.90 1333.93 294.57 << 903.75 588.18 1491.93 14.00 1344.70 294.57 903.76 588.20 1491.97 << 14.10 1348.97 «294.56 901.60 584.03 1485.63 14.20 1346.50 294.54 897.21 575.55 1472.76 14.30 1336.83 294.52 890.24 562.09 1452.32 14.40 1320.12 294.49 880.52 543.83 1424.35 14.50 1296.98 294.45 868.27 521.68 1389.95 14.60 1268.20 294.40 854.07 496.10 1350.17 14.70 1234.81 294.35 837.74 468.64 1306.38 14.80 1197.38 294.29 819.94 439.15 1259.10 14.90 1156.81 294.23 800.49 408.85 1209.32 15.00 1113.61 294.17 779.64 377.83 1157.46 15.10 1068.40 294.10 757.65 346.33 1103.98 15.20 1020.80 294.03 734.03 315.41 1049.44 15.30 903.16 293.92 672.75 279.44 952.18 15.40 853.52 293.86 632.73 262.82 895.56 15.50 812.69 293.81 599.59 249.05 848.63 15.60 777.03 293.76 567.89 235.88 803.78 15.70 743.15 293.73 543.18 225.62 768.79 15.80 710.23 293.69 516.99 214.74 731.74 15.90 677.83 293.65 494.16 205.26 699.43 16.00 645.76 293.62 469.47 195.01 664.47 16.10 613.86 293.58 447.17 185.74 632.91 16.20 582.08 293.54 423.16 175.77 598.92 16.30 550.57 293.51 401.14 166.62 567.76 16.40 519.75 293.48 378.14 157.07 535.22 16.50 490.32 293.44 357.66 148.56 506.21 16.60 463.84 293.42 338.14 140.45 478.58 16.70 440.22 293.39 321.89 133.70 455.59 16.80 417.97 293.37 305.47 126.89 432.35 16.90 396.56 293.34 290.55 120.68 411.23 17.00 375.75 293.32 275.18 114.30 389.48 17.10 355.41 293.30 260.91 108.37 369.29 17.20 335.54 293.28 246.30 102.31 348.60 17.30 316.31 293.25 232.77 96.69 329.47 17.40 298.14 293.23 219.51 91.18 310.68 17.50 281.91 293.22 208.21 86.48 294.67 17.60 268.13 293.20 198.25 82.35 280.59 17.70 256.52 293.19 190.25 79.02 269.28 17.80 246.69 293.18 183.12 76.06 259.19 Continues on next page... Railroad Pond Hydrograph Discharge Table Page 3 Time Inflow Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 17.90 238.27 293.17 177.31 73.65 250.96 18.00 230.97 293.16 171.93 71.42 243.36 18.10 224.53 293.16 167.45 69.55 237.01 18.20 218.77 293.15 163.18 67.78 230.95 18.30 213.55 293.14 159.49 66.25 225.75 18.40 208.78 293.14 155.92 64.77 220.69 18.50 204.37 293.13 152.80 63.47 216.26 18.60 200.26 293.13 149.71 62.19 211.89 18.70 196.41 293.12 146.95 61.04 207.99 18.80 192.79 293.12 144.22 59.91 204.13 18.90 189.35 293.12 141.76 58.88 200.63 19.00 186.09 293.11 139.29 57.86 197.15 19.10 182.97 293.11 137.05 56.93 193.97 19.20 179.99 293.11 134.80 55.99 190.79 19.30 177.12 293.10 132.72 55.13 187.84 19.40 174.36 293.10 130.63 54.26 184.90 19.50 171.68 293.10 128.69 53.45 182.14 19.60 169.08 293.09 126.73 52.64 179.37 19.70 166.55 293.09 124.88 51.87 176.75 19.80 164.07 293.09 123.02 51.10 174.12 19.90 161.65 293.08 121.24 50.36 171.60 20.00 159.27 293.08 119.45 49.62 169.06 20.10 156.94 293.08 117.73 48.90 166.62 20.20 154.64 293.08 115.99 48.18 164.18 20.30 152.38 293.07 114.32 47.49 161.81 20.40 150.16 293.07 112.64 46.79 159.43 20.50 147.98 293.07 111.02 46.11 157.13 20.60 145.83 293.07 109.39 45.44 154.84 20.70 143.73 293.06 107.83 44.79 152.61 20.80 141.66 293.06 106.27 44.14 150.40 20.90 139.64 293.06 104.74 43.51 148.25 21.00 137.66 293.06 103.24 42.88 146.13 21.10 135.73 293.06 101.80 42.28 144.09 21.20 133.85 293.05 100.38 41.69 142.08 21.30 132.03 293.05 99.01 41.13 140.14 21.40 130.27 293.05 97.69 40.58 138.26 21.50 128.57 293.05 96.41 40.04 136.45 21.60 126.93 293.05 95.17 39.53 134.70 21.70 125.34 293.04 93.98 39.04 133.02 21.80 123.82 293.04 92.84 38.56 131.40 21.90 122.36 293.04 91.76 38.11 129.86 22.00 120.96 293.04 90.70 37.67 128.38 22.10 119.62 293.04 89.71 37.26 126.97 22.20 118.34 293.04 88.75 36.87 125.62 22.30 117.12 293.03 87.85 36.49 124.33 22.40 115.95 293.03 86.99 36.13 123.11 22.50 114.84 293.03 86.17 35.79 121.95 22.60 113.79 293.03 85.39 35.47 120.85 22.70 112.79 293.03 84.64 35.16 119.80 Continues on next page... Railroad Pond Hydrograph Discharge Table Page 4 Time Inflow Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 22.80 111.84 293.03 83.94 34.87 118.81 22.90 110.93 293.03 83.28 34.59 117.87 23.00 110.07 293.03 82.64 34.33 116.97 23.10 109.26 293.03 82.04 34.08 116.12 23.20 108.48 293.02 81.48 33.84 115.31 23.30 107.74 293.02 80.94 33.62 114.54 23.40 107.03 293.02 80.42 33.40 113.81 23.50 106.35 293.02 79.92 33.19 113.10 23.60 105.70 293.02 79.43 32.99 112.43 23.70 105.07 293.02 78.97 32.80 111.78 23.80 104.47 293.02 78.53 32.62 111.16 23.90 103.89 293.02 78.11 32.45 110.55 24.00 103.33 293.02 77.69 32.27 109.97 24.10 102.79 293.02 77.29 32.10 109.41 24.20 102.18 293.02 76.89 31.94 108.83 24.30 101.43 293.02 76.39 31.73 108.11 24.40 100.51 293.02 75.73 31.45 107.18 24.50 99.38 293.01 74.91 31.11 106.02 24.60 98.03 293.01 73.90 30.70 104.61 24.70 96.44 293.01 72.72 30.21 102.94 24.80 94.62 293.01 71.36 29.64 101.00 24.90 92.55 293.01 69.80 28.99 98.79 25.00 90.24 293.00 68.05 28.27 96.31 25.10 87.68 293.00 66.09 27.45 93.55 25.20 84.87 293.00 63.94 26.56 90.51 25.30 81.81 292.99 61.62 25.60 87.20 25.40 78.50 292.99 59.08 24.54 83.62 25.50 75.08 292.99 56.39 23.42 79.80 25.60 71.59 292.98 53.62 22.27 75.90 25.70 68.04 292.98 50.84 21.12 71.94 25.80 64.44 292.97 48.01 19.94 67.95 25.90 60.79 292.97 45.17 18.76 63.92 26.00 57.16 292.96 42.34 17.59 59.94 26.10 53.57 292.96 39.58 16.44 56.02 26.20 50.03 292.96 36.85 15.31 52.17 26.30 46.54 292.95 34.19 14.20 48.40 26.40 43.14 292.95 31.60 13.13 44.72 26.50 39.85 292.94 29.10 12.09 41.18 26.60 36.68 292.94 26.69 11.09 37.78 26.70 33.66 292.94 24.41 10.14 34.55 26.80 30.79 292.93 22.24 9.24 31.49 26.90 28.08 292.93 20.20 8.39 28.60 27.00 25.52 292.93 18.30 7.60 25.90 27.10 23.14 292.93 16.51 6.86 23.37 27.20 20.92 292.92 14.85 6.17 21.03 27.30 18.86 292.92 13.33 5.54 18.87 27.40 16.97 292.92 11.92 4.95 16.89 27.50 15.25 292.92 10.66 d AI I G I r) ..End Reservoir Report Reservoir No. 1 - Railroad Pond Pond Data Pond storage is based on known contour areas Stage / Storage Table Stage ft 0.00 1.00 2.00 3.00 4.00 5.00 Elevation ft 288.00 290.00 292.00 294.00 296.00 298.00 Contour area Incr. Storage Total storage sqft cuft cuft 00 0 0 12,000 6,000 6,000 10,000 11,000 17,000 175,000 92,500 109,500 300,000 237,500 347,000 550,000 425,000 772,000 Culvert / Orifice Structures [A] [B] Rise in = 60.0 0.0 Span in = 120.0 0.0 No. Barrels = 3 0 Invert El. ft = 288.00 0.00 Length ft = 25.0 0.0 Slope % = 0.25 0.00 N-Value = .026 .000 Orif. Coeff. = 0.60 0.00 Multi-Stage = No Weir Structures Page 1 English [C] [D] [A] [B] [C] 0.0 0.0 Crest Len ft = 100.0 0.0 0.0 0.0 0.0 Crest El. ft = 293.00 0.00 0.00 0 0 Weir Coeff. = 3.00 0.00 0.00 0.00 0.00 Eqn. Exp. = 1.50 0.00 0.00 0.0 0.0 Multi-Stage = No No No 0.00 0.00 .000 .000 0.00 0.00 No No Tailwater Elevation = 293.00 ft Stage / Storage / Discharge Table [D] 0.0 0.00 0.00 0.00 No Note: All outflows have been analyzed under inlet and outlet control. Stage Storage Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Discharge ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 288.00 0.00 0.00 0.00 1.00 6,000 290.00 0.00 0.00 0.00 2.00 17,000 292.00 0.00 0.00 0.00 3.00 109,500 294.00 722.25 300.00 1022.25 4.00 347,000 296.00 1250.97 1558.85--- 2809.81 5.00 772,000 298.00 1614.99 3354.10--- 4969.09 Hydrograph Report Page 1 English Hyd. No. 18 bridge Hydrograph type = Diversion'! Peak discharge = 903.76 cfs Storm frequency = 100 yrs Time interval = 6 min Inflow hydrograph = 17 2nd diverted hyd. = 19 Diversion method = Pond - Railroad Pond Pond structure = Culv/Orf A Total Volume = 15,453,760 cuft Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 9.40 32.70 9.60 23.10 9.50 24.74 7.26 17.48 9.60 36.15 10.61 25.54 9.70 30.28 8.89 21.39 9.80 40.26 11.82 28.45 9.90 36.15 10.61 25.54 10.00 45.04 13.22 31.83 10.10 42.44 12.46 29.99 10.20 50.52 14.83 35.69 10.30 49.25 14.45 34.79 10.40 56.76 16.66 40.10 10.50 56.70 16.64 40.06 10.60 63.89 18.75 45.14 10.70 64.98 19.07 45.91 10.80 72.11 21.16 50.95 10.90 74.39 21.83 52.56 11.00 81.76 23.99 57.77 11.10 85.32 25.04 60.28 11.20 93.21 27.36 65.86 11.30 98.14 28.80 69.34 11.40 106.87 31.36 75.51 11.50 113.57 33.33 80.24 11.60 123.79 36.33 87.46 11.70 133.04 39.04 94.00 11.80 147.36 43.25 104.12 11.90 166.00 48.72 117.28 12.00 198.27 58.19 140.08 12.10 248.82 73.02 175.80 12.20 318.97 93.61 225.36 12.30 397.98 116.80 281.18 12.40 485.16 142.38 342.78 12.50 576.32 169.13 407.19 12.60 672.00 197.21 474.78 12.70 769.20 225.74 543.46 12.80 868.61 254.91 613.69 12.90 968.11 284.11 684.00 Continues on next page... bridge Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 13.00 1040.62 310.41 730.21 13.10 1100.40 344.29 756.11 13.20 1186.44 394.91 791.53 13.30 1271.05 446.48 824.57 13.40 1342.00 490.98 851.02 13.50 1395.19 525.06 870.13 13.60 1434.32 550.25 884.08 13.70 1463.82 569.66 894.16 13.80 1483.24 582.45 900.79 13.90 1491.93 588.18 903.75 14.00 1491.97 << 588.20 << 903.76 << 14.10 1485.63 584.03 901.60 14.20 1472.76 575.55 897.21 14.30 1452.32 562.09 890.24 14.40 1424.35 543.83 880.52 14.50 1389.95 521.68 868.26 14.60 1350.17 496.10 854.07 14.70 1306.38 468.64 837.74 14.80 1259.10 439.15 819.95 14.90 1209.32 408.84 800.48 15.00 1157.46 377.82 779.64 15.10 1103.98 346.33 757.65 15.20 1049.44 315.41 734.03 15.30 952.18 279.44 672.74 15.40 895.56 262.82 632.74 15.50 848.63 249.05 599.59 15.60 803.78 235.89 567.89 15.70 768.79 225.62 543.17 15.80 731.74 214.75 517.00 15.90 699.43 205.26 494.17 16.00 664.47 195.00 469.47 16.10 632.91 185.74 447.17 16.20 598.92 175.77 423.16 16.30 567.76 166.62 401.14 16.40 535.22 157.07 378.15 16.50 506.21 148.56 357.65 16.60 478.58 140.45 338.13 16.70 455.59 133.70 321.89 16.80 432.35 126.88 305.47 16.90 411.23 120.68 290.55 17.00 389.48 114.30 275.18 17.10 369.29 108.38 260.91 17.20 348.60 102.30 246.29 17.30 329.47 96.69 232.78 17.40 310.68 91.18 219.50 17.50 294.67 86.48 208.20 17.60 280.59 82.35 198.24 17.70 269.28 79.03 190.25 17.80 259.19 76.07 183.12 Page 2 Continues on next page... bridge Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 17.90 250.96 73.65 177.31 18.00 243.36 71.42 171.94 18.10 237.01 69.55 167.45 18.20 230.95 67.78 163.17 18.30 225.75 66.25 159.50 18.40 220.69 64.77 155.92 18.50 216.26 63.47 152.79 18.60 211.89 62.18 149.70 18.70 207.99 61.04 146.95 18.80 204.13 59.91 144.22 18.90 200.63 58.88 141.75 19.00 197.15 57.86 139.29 19.10 193.97 56.92 137.04 19.20 190.79 55.99 134.80 19.30 187.84 55.13 132.72 19.40 184.90 54.26 130.64 19.50 182.14 53.45 128.69 19.60 179.37 52.64 126.73 19.70 176.75 51.87 124.88 19.80 174.12 51.10 123.02 19.90 171.60 50.36 121.24 20.00 169.06 49.61 119.45 20.10 166.62 48.90 117.72 20.20 164.18 48.18 115.99 20.30 161.81 47.49 114.32 20.40 159.43 46.79 112.64 20.50 157.13 46.11 111.02 20.60 154.84 45.44 109.40 20.70 152.61 44.79 107.82 20.80 150.40 44.14 106.26 20.90 148.25 43.51 104.74 21.00 146.13 42.89 103.25 21.10 144.09 42.29 101.80 21.20 142.08 41.70 100.38 21.30 140.14 41.13 99.02 21.40 138.26 40.57 97.68 21.50 136.45 40.04 96.41 21.60 134.70 39.53 95.17 21.70 133.02 39.04 93.98 21.80 131.40 38.56 92.84 21.90 129.86 38.11 91.75 22.00 128.38 37.67 90.70 22.10 126.97 37.26 89.71 22.20 125.62 36.87 88.75 22.30 124.33 36.49 87.85 22.40 123.11 36.13 86.98 22.50 121.95 35.79 86.16 22.60 120.85 35.46 85.38 22.70 119.80 35.16 84.64 Page 3 Continues on next page... bridge Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 22.80 118.81 34.87 83.94 22.90 117.87 34.59 83.28 23.00 116.97 34.33 82.64 23.10 116.12 34.08 82.04 23.20 115.31 33.84 81.47 23.30 114.54 33.61 80.93 23.40 113.81 33.40 80.41 23.50 113.10 33.19 79.91 23.60 112.43 33.00 79.43 23.70 111.78 32.80 78.98 23.80 111.16 32.62 78.53 23.90 110.55 32.44 78.11 24.00 109.97 32.27 77.70 24.10 109.41 32.11 77.30 24.20 108.83 31.94 76.89 24.30 108.11 31.73 76.38 24.40 107.18 31.45 75.73 24.50 106.02 31.11 74.91 24.60 104.61 30.70 73.91 24.70 102.94 30.21 72.73 24.80 101.00 29.64 71.36 24.90 98.79 28.99 69.80 25.00 96.31 28.26 68.04 25.10 93.55 27.45 66.10 25.20 90.51 26.56 63.95 25.30 87.20 25.59 61.61 25.40 83.62 24.54 59.08 25.50 79.80 23.42 56.38 25.60 75.90 22.27 53.62 25.70 71.94 21.11 50.83 25.80 67.95 19.94 48.01 25.90 63.92 18.76 45.16 26.00 59.94 17.59 42.35 26.10 56.02 16.44 39.58 26.20 52.17 15.31 36.86 26.30 48.40 14.20 34.19 26.40 44.72 13.13 31.60 26.50 41.18 12.09 29.10 26.60 37.78 11.09 26.70 26.70 34.55 10.14 24.41 26.80 31.49 9.24 22.25 26.90 28.60 8.39 20.21 27.00 25.90 7.60 18.30 27.10 23.37 6.86 16.51 27.20 21.03 6.17 14.86 27.30 18.87 5.54 13.33 27.40 16.89 4.96 11.93 27.50 15.10 4.43 10.67 27.60 13.48 3.96 9.53 Page 4 Continues on next page... End Hydrograph Report Page 1 English Hyd. No. 19 side channel Hydrograph type = Diversion2 Peak discharge = 588.20 cfs Storm frequency = 100 yrs Time interval = 6 min Inflow hydrograph = 17 2nd diverted hyd. = 18 Diversion method = Pond - Railroad Pond Pond structure = Culv/Orf A Total Volume = 7,499,268 cuft Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow - (hrs) cfs cfs cfs 9.40 32.70 23.10 9.60 9.50 24.74 17.48 7.26 9.60 36.15 25.54 10.61 9.70 30.28 21.39 8.89 9.80 40.26 28.45 11.82 9.90 36.15 25.54 10.61 10.00 45.04 31.83 13.22 10.10 42.44 29.99 12.46 10.20 50.52 35.69 14.83 10.30 49.25 34.79 14.45 10.40 56.76 40.10 16.66 10.50 56.70 40.06 16.64 10.60 63.89 45.14 18.75 10.70 64.98 45.91 19.07 10.80 72.11 50.95 21.16 10.90 74.39 52.56 21.83 11.00 81.76 57.77 23.99 11.10 85.32 60.28 25.04 11.20 93.21 65.86 27.36 11.30 98.14 69.34 28.80 11.40 106.87 75.51 31.36 11.50 113.57 80.24 33.33 11.60 123.79 87.46 36.33 11.70 133.04 94.00 39.04 11.80 147.36 104.12 43.25 11.90 166.00 117.28 48.72 12.00 198.27 140.08 58.19 12.10 248.82 175.80 73.02 12.20 318.97 225.36 93.61 12.30 397.98 281.18 116.80 12.40 485.16 342.78 142.38 12.50 576.32 407.19 169.13 12.60 672.00 474.78 197.21 12.70 769.20 543.46 225.74 12.80 868.61 613.69 254.91 12.90 968.11 684.00 284.11 Continues on next page... side channel Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 13.00 1040.62 730.21 310.41 13.10 1100.40 756.11 344.29 13.20 1186.44 791.53 394.91 13.30 1271.05 824.57 446.48 13.40 1342.00 851.02 490.98 13.50 1395.19 870.13 525.06 13.60 1434.32 884.08 550.25 13.70 1463.82 894.16 569.66 13.80 1483.24 900.79 582.45 13.90 1491.93 903.75 588.18 14.00 1491.97 << 903.76 << 588.20 << 14.10 1485.63 901.60 584.03 14.20 1472.76 897.21 575.55 14.30 1452.32 890.24 562.09 14.40 1424.35 880.52 543.83 14.50 1389.95 868.26 521.68 14.60 1350.17 854.07 496.10 14.70 1306.38 837.74 468.64 14.80 1259.10 819.95 439.15 14.90 1209.32 800.48 408.84 15.00 1157.46 779.64 377.82 15.10 1103.98 757.65 346.33 15.20 1049.44 734.03 315.41 15.30 952.18 672.74 279.44 15.40 895.56 632.74 262.82 15.50 848.63 599.59 249.05 15.60 803.78 567.89 235.89 15.70 768.79 543.17 225.62 15.80 731.74 517.00 214.75 15.90 699.43 494.17 205.26 16.00 664.47 469.47 195.00 16.10 632.91 447.17 185.74 16.20 598.92 423.16 175.77 16.30 567.76 401.14 166.62 16.40 535.22 378.15 157.07 16.50 506.21 357.65 148.56 16.60 478.58 338.13 140.45 16.70 455.59 321.89 133.70 16.80 432.35 305.47 126.88 16.90 411.23 290.55 120.68 17.00 389.48 275.18 114.30 17.10 369.29 260.91 108.38 17.20 348.60 246.29 102.30 17.30 329.47 232.78 96.69 17.40 310.68 219.50 91.18 17.50 294.67 208.20 86.48 17.60 280.59 198.24 82.35 17.70 269.28 190.25 79.03 17.80 259.19 183.12 76.07 Page 2 Continues on next page... side channel Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 17.90 250.96 177.31 73.65 18.00 243.36 171.94 71.42 18.10 237.01 167.45 69.55 18.20 230.95 163.17 67.78 18.30 225.75 159.50 66.25 18.40 220.69 155.92 64.77 18.50 216.26 152.79 63.47 18.60 211.89 149.70 62.18 18.70 207.99 146.95 61.04 18.80 204.13 144.22 59.91 18.90 200.63 141.75 58.88 19.00 197.15 139.29 57.86 19.10 193.97 137.04 56.92 19.20 190.79 134.80 55.99 19.30 187.84 132.72 55.13 19.40 184.90 130.64 54.26 19.50 182.14 128.69 53.45 19.60 179.37 126.73 52.64 19.70 176.75 124.88 51.87 19.80 174.12 123.02 51.10 19.90 171.60 121.24 50.36 20.00 169.06 119.45 49.61 20.10 166.62 117.72 48.90 20.20 164.18 115.99 48.18 20.30 161.81 114.32 47.49 20.40 159.43 112.64 46.79 20.50 157.13 111.02 46.11 20.60 154.84 109.40 45.44 20.70 152.61 107.82 44.79 20.80 150.40 106.26 44.14 20.90 148.25 104.74 43.51 21.00 146.13 103.25 42.89 21.10 144.09 101.80 42.29 21.20 142.08 100.38 41.70 21.30 140.14 99.02 41.13 21.40 138.26 97.68 40.57 21.50 136.45 96.41 40.04 21.60 134.70 95.17 39.53 21.70 133.02 93.98 39.04 21.80 131.40 92.84 38.56 21.90 129.86 91.75 38.11 22.00 128.38 90.70 37.67 22.10 126.97 89.71 37.26 22.20 125.62 88.75 36.87 22.30 124.33 87.85 36.49 22.40 123.11 86.98 36.13 22.50 121.95 86.16 35.79 22.60 120.85 85.38 35.46 22.70 119.80 84.64 35.16 Page 3 Continues on next page... side channel Hydrograph Discharge Table Time Inflow 2nd Diverted Outflow (hrs) cfs cfs cfs 22.80 118.81 83.94 34.87 22.90 117.87 83.28 34.59 23.00 116.97 82.64 34.33 23.10 116.12 82.04 34.08 23.20 115.31 81.47 33.84 23.30 114.54 80.93 33.61 23.40 113.81 80.41 33.40 23.50 113.10 79.91 33.19 23.60 112.43 79.43 33.00 23.70 111.78 78.98 32.80 23.80 111.16 78.53 32.62 23.90 110.55 78.11 32.44 24.00 109.97 77.70 32.27 24.10 109.41 77.30 32.11 24.20 108.83 76.89 31.94 24.30 108.11 76.38 31.73 24.40 107.18 75.73 31.45 24.50 106.02 74.91 31.11 24.60 104.61 73.91 30.70 24.70 102.94 72.73 30.21 24.80 101.00 71.36 29.64 24.90 98.79 69.80 28.99 25.00 96.31 68.04 28.26 25.10 93.55 66.10 27.45 25.20 90.51 63.95 26.56 25.30 87.20 61.61 25.59 25.40 83.62 59.08 24.54 25.50 79.80 56.38 23.42 25.60 75.90 53.62 22.27 25.70 71.94 50.83 21.11 25.80 67.95 48.01 19.94 25.90 63.92 45.16 18.76 26.00 59.94 42.35 17.59 26.10 56.02 39.58 16.44 26.20 52.17 36.86 15.31 26.30 48.40 34.19 14.20 26.40 44.72 31.60 13.13 26.50 41.18 29.10 12.09 26.60 37.78 26.70 11.09 26.70 34.55 24.41 10.14 26.80 31.49 22.25 9.24 26.90 28.60 20.21 8.39 27.00 25.90 18.30 7.60 27.10 23.37 16.51 6.86 27.20 21.03 14.86 6.17 Page 4 End Hydrograph Report Hyd. No. 9 Subbasin 5 Hydrograph type = SCS Runoff Storm frequency = 100 yrs Drainage area = 53.00 ac Basin Slope = 0.0 % Tc method = TR55 Total precip. = 11.00 in Storm duration = 24 hrs Page 1 English Peak discharge = 131.11 cfs Time interval = 6 min Curve number = 75 Hydraulic length = 0 ft Time of conc. (Tc) = 124.5 min Distribution = Type II Shape factor = 484 Total Volume = 1,517,598 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7.60 1.37 10.80 8.58 14.00 98.00 17.20 14.33 7.70 1.48 10.90 9.10 14.10 92.80 17.30 14.04 7.80 1.60 11.00 9.66 14.20 87.48 17.40 13.77 7.90 1.72 11.10 10.28 14.30 82.05 17.50 13.51 8.00 1.84 11.20 10.96 14.40 76.54 17.60 13.26 8.10 1.97 11.30 11.73 14.50 70.96 17.70 13.02 8.20 2.10 11.40 12.61 14.60 65.31 17.80 12.80 8.30 2.23 11.50 13.60 14.70 59.64 17.90 12.58 8.40 2.37 11.60 14.95 14.80 53.94 18.00 12.37 8.50 2.51 11.70 17.09 14.90 48.26 18.10 12.18 8.60 2.66 11.80 20.67 15.00 42.59 18.20 11.99 8.70 2.81 11.90 27.12 15.10 37.10 18.30 11.81 8.80 2.97 12.00 35.62 15.20 32.05 18.40 11.64 8.90 3.14 12.10 44.43 15.30 27.84 18.50 11.47 9.00 3.32 12.20 53.48 15.40 25.30 18.60 11.31 9.10 3.51 12.30 62.72 15.50 23.98 18.70 11.15 9.20 3.71 12.40 72.09 15.60 22.85 18.80 11.00 9.30 3.92 12.50 81.50 15.70 21.88 18.90 10.86 9.40 4.14 12.60 90.87 15.80 21.04 19.00 10.71 9.50 4.37 12.70 100.17 15.90 20.29 19.10 10.57 9.60 4.61 12.80 109.34 16.00 19.62 19.20 10.43 9.70 4.86 12.90 118.00 16.10 19.00 19.30 10.30 9.80 5.11 13.00 125.42 16.20 18.42 19.40 10.16 9.90 5.38 13.10 130.55 16.30 17.89 19.50 10.02 10.00 5.66 13.20 131.11 << 16.40 17.39 19.60 9.89 10.10 5.95 13.30 128.36 16.50 16.92 19.70 9.75 10.20 6.26 13.40 125.07 16.60 16.48 19.80 9.62 10.30 6.59 13.50 121.30 16.70 16.07 19.90 9.48 10.40 6.93 13.60 117.14 16.80 15.68 20.00 9.34 10.50 7.29 13.70 112.66 16.90 15.32 20.10 9.21 10.60 7.69 13.80 107.95 17.00 14.97 20.20 9.07 10.70 8.11 13.90 103.06 17.10 14.64 20.30 8.94 Continues on next page... Subbasin 5 Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 20.40 8.80 20.50 8.67 20.60 8.54 20.70 8.42 20.80 8.30 20.90 8.18 21.00 8.07 21.10 7.96 21.20 7.86 21.30 7.76 21.40 7.67 21.50 7.59 21.60 7.51 21.70 7.44 21.80 7.37 21.90 7.30 22.00 7.24 22.10 7.19 22.20 7.14 22.30 7.09 22.40 7.05 22.50 7.01 22.60 6.97 22.70 6.93 22.80 6.90 22.90 6.86 23.00 6.83 23.10 6.81 23.20 6.78 23.30 6.75 23.40 6.72 23.50 6.70 23.60 6.67 23.70 6.64 23.80 6.61 23.90 6.59 24.00 6.56 24.10 6.51 24.20 6.43 24.30 6.32 24.40 6.18 24.50 6.02 24.60 5.84 24.70 5.62 24.80 5.38 24.90 5.12 25.00 4.83 25.10 4.51 25.20 4.17 25.30 3.80 25.40 3.45 25.50 3.12 25.60 2.80 25.70 2.50 25.80 2.22 25.90 1.96 26.00 1.71 26.10 1.48 End Page 2 TR55 Tc Worksheet Hyd. No. 9 Subbasin 5 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 268.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 91.5 min Shallow Concentrated Flow Flow length = 3500 ft Watercourse slope = 1.2 % Surface description = Unpaved Average velocity = 1.77 ft/s Travel Time = 33.0 min Channel Flow Cross section flow area Wetted perimeter Channel slope Manning's n-value Velocity Flow length = 0.0 sqft = 0.0 ft = 0.0 % = 0.015 = 0.00 ft/s = 0.0 ft Travel Time = min Page 1 Total Travel Time, Tc = 124.5 min Hydrograph Report Page 1 English Hyd. No. 20 Combine sub 9 and pond Hydrograph type = Combine Storm frequency = 100 yrs 1 st inflow hyd. No.= 9 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 9.40 4.14 23.10 27.24 9.50 4.37 17.48 21.85 9.60 4.61 25.54 30.15 9.70 4.86 21.39 26.25 9.80 5.11 28.45 33.56 9.90 5.38 25.54 30.93 10.00 5.66 31.83 37.49 10.10 5.95 29.99 35.94 10.20 6.26 35.69 41.95 10.30 6.59 34.79 41.38 10.40 6.93 40.10 47.03 10.50 7.29 40.06 47.35 10.60 7.69 45.14 52.83 10.70 8.11 45.91 54.02 10.80 8.58 50.95 59.53 10.90 9.10 52.56 61.66 11.00 9.66 57.77 67.43 11.10 10.28 60.28 70.56 11.20 10.96 65.86 76.82 11.30 11.73 69.34 81.07 11.40 12.61 75.51 88.12 11.50 13.60 80.24 93.84 11.60 14.95 87.46 102.41 11.70 17.09 94.00 111.09 11.80 20.67 104.12 124.79 11.90 27.12 117.28 144.40 12.00 35.62 140.08 175.70 12.10 44.43 175.80 220.23 12.20 53.48 225.36 278.85 12.30 62.72 281.18 343.90 12.40 72.09 342.78 414.87 12.50 81.50 407.19 488.69 12.60 90.87 474.78 565.65 12.70 100.17 543.46 643.63 12.80 109.34 613.69 723.04 12.90 118.00 684.00 802.00 Peak discharge = 1008.74 cfs Time interval = 6 min 2nd inflow hyd. No.= 18 Total Volume = 16,971,350 cuft Continues on next page... Combine sub 9 and pond Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 13.00 125.42 730.21 855.62 13.10 130.55 756.11 886.66 13.20 131.11 << 791.53 922.64 13.30 128.36 824.57 952.93 13.40 125.07 851.02 976.09 13.50 121.30 870.13 991.44 13.60 117.14 884.08 1001.22 13.70 112.66 894.16 1006.82 13.80 107.95 900.79 1008.74 << 13.90 103.06 903.75 1006.81 14.00 98.00 903.76 << 1001.77 14.10 92.80 901.60 994.40 14.20 87.48 897.21 984.69 14.30 82.05 890.24 972.29 14.40 76.54 880.52 957.06 14.50 70.96 868.26 939.22 14.60 65.31 854.07 919.38 14.70 59.64 837.74 897.38 14.80 53.94 819.95 873.89 14.90 48.26 800.48 848.74 15.00 42.59 779.64 822.23 15.10 37.10 757.65 794.75 15.20 32.05 734.03 766.08 15.30 27.84 672.74 700.58 15.40 25.30 632.74 658.04 15.50 23.98 599.59 623.57 15.60 22.85 567.89 590.74 15.70 21.88 543.17 565.05 15.80 21.04 517.00 538.03 15.90 20.29 494.17 514.46 16.00 19.62 469.47 489.09 16.10 19.00 447.17 466.17 16.20 18.42 423.16 441.58 16.30 17.89 401.14 419.03 16.40 17.39 378.15 395.54 16.50 16.92 357.65 374.57 16.60 16.48 338.13 354.62 16.70 16.07 321.89 337.96 16.80 15.68 305.47 321.15 16.90 15.32 290.55 305.86 17.00 14.97 275.18 290.15 17.10 14.64 260.91 275.56 17.20 14.33 246.29 260.63 17.30 14.04 232.78 246.83 17.40 13.77 219.50 233.27 17.50 13.51 208.20 221.70 17.60 13.26 198.24 211.50 17.70 13.02 190.25 203.28 17.80 12.80 183.12 195.92 Page 2 Continues on next page... Combine sub 9 and pond Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 17.90 12.58 177.31 189.89 18.00 12.37 171.94 184.32 18.10 12.18 167.45 179.63 18.20 11.99 163.17 175.16 18.30 11.81 159.50 171.31 18.40 11.64 155.92 167.56 18.50 11.47 152.79 164.26 18.60 11.31 149.70 161.01 18.70 11.15 146.95 158.11 18.80 11.00 144.22 155.22 18.90 10.86 141.75 152.61 19.00 10.71 139.29 150.00 19.10 10.57 137.04 147.61 19.20 10.43 134.80 145.23 19.30 10.30 132.72 143.01 19.40 10.16 130.64 140.80 19.50 10.02 128.69 138.71 19.60 9.89 126.73 136.62 19.70 9.75 124.88 134.63 19.80 9.62 123.02 132.63 19.90 9.48 121.24 130.72 20.00 9.34 119.45 128.79 20.10 9.21 117.72 126.93 20.20 9.07 115.99 125.06 20.30 8.94 114.32 123.26 20.40 8.80 112.64 121.45 20.50 8.67 111.02 119.69 20.60 8.54 109.40 117.94 20.70 8.42 107.82 116.24 20.80 8.30 106.26 114.56 20.90 8.18 104.74 112.93 21.00 8.07 103.25 111.32 21.10 7.96 101.80 109.76 21.20 7.86 100.38 108.24 21.30 7.76 99.02 106.78 21.40 7.67 97.68 105.35 21.50 7.59 96.41 103.99 21.60 7.51 95.17 102.68 21.70 7.44 93.98 101.42 21.80 7.37 92.84 100.21 21.90 7.30 91.75 99.05 22.00 7.24 90.70 97.95 22.10 7.19 89.71 96.90 22.20 7.14 88.75 95.89 22.30 7.09 87.85 94.94 22.40 7.05 86.98 94.03 22.50 7.01 86.16 93.17 22.60 6.97 85.38 92.35 22.70 6.93 84.64 91.58 Page 3 Continues on next page... Combine sub 9 and pond Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 22.80 6.90 83.94 90.84 22.90 6.86 83.28 90.14 23.00 6.83 82.64 89.48 23.10 6.81 82.04 88.85 23.20 6.78 81.47 88.25 23.30 6.75 80.93 87.68 23.40 6.72 80.41 87.13 23.50 6.70 79.91 86.61 23.60 6.67 79.43 86.10 23.70 6.64 78.98 85.62 23.80 6.61 78.53 85.15 23.90 6.59 78.11 84.70 24.00 6.56 77.70 84.26 24.10 6.51 77.30 83.81 24.20 6.43 76.89 83.32 24.30 6.32 76.38 82.70 24.40 6.18 75.73 81.91 24.50 6.02 74.91 80.93 24.60 5.84 73.91 79.75 24.70 5.62 72.73 78.36 24.80 5.38 71.36 76.74 24.90 5.12 69.80 74.92 25.00 4.83 68.04 72.87 25.10 4.51 66.10 70.61 25.20 4.17 63.95 68.12 25.30 3.80 61.61 65.41 25.40 3.45 59.08 62.53 25.50 3.12 56.38 59.50 25.60 2.80 53.62 56.42 25.70 2.50 50.83 53.33 25.80 2.22 48.01 50.23 25.90 1.96 45.16 47.12 26.00 1.71 42.35 44.06 26.10 1.48 39.58 41.06 26.20 1.27 36.86 38.13 26.30 1.07 34.19 35.26 26.40 0.89 31.60 32.49 26.50 0.73 29.10 29.82 26.60 0.58 26.70 27.28 26.70 0.45 24.41 24.86 26.80 0.34 22.25 22.59 26.90 0.24 20.21 20.45 27.00 0.16 18.30 18.46 27.10 0.10 16.51 16.61 27.20 0.05 14.86 14.90 27.30 0.02 13.33 13.35 27.40 0.00 11.93 11.93 27.50 0.00 10.67 10.67 Page 4 End Hydrograph Report Page 1 English Hyd. No. 21 Reach 4 Hydrograph type Storm frequency Inflow hyd. No. Reach length Manning's n Side slope Rating curve x Ave. velocity = Reach = 100 yrs = 20 = 1676.0 ft = 0.030 = 2.0:1 = 1.074 = 33.48 ft/s Peak discharge Time interval Section type Channel slope Bottom width Max. depth Rating curve m Routing coeff. = 1009.25 cfs = 6 min = Trapezoidal = 0.4% = 5.0 ft = 5.0 ft = 1.373 = 1.6631 Modified Att-Kin routing method used. Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 9.50 21.85 42.65 9.70 26.25 44.80 9.80 33.56 13.94 9.90 30.93 46.57 10.00 37.49 20.55 10.10 35.94 48.72 10.20 41.95 27.47 10.30 41.38 51.56 10.40 47.03 34.63 10.50 47.35 55.25 10.60 52.83 42.11 10.70 54.02 59.93 10.80 59.53 50.11 10.90 61.66 65.78 11.00 67.43 58.92 11.10 70.56 73.08 11.20 76.82 68.89 11.30 81.07 82.07 11.40 88.12 80.40 11.50 93.84 93.23 11.60 102.41 94.25 11.70 111.09 107.82 11.80 124.79 113.25 11.90 144.40 132.44 12.00 175.70 152.34 12.10 220.23 191.19 12.20 278.85 239.48 12.30 343.90 304.95 12.40 414.87 369.73 12.50 488.69 444.81 12.60 565.65 517.78 12.70 643.63 597.40 Total Volume = 16,971,350 cult Continues on next page... Reach 4 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 12.80 723.04 674.28 12.90 802.00 755.37 13.00 855.62 832.93 13.10 886.66 870.67 13.20 922.64 897.26 13.30 952.93 939.47 13.40 976.09 961.86 13.50 991.44 985.53 13.60 1001.22 995.35 13.70 1006.82 1005.10 13.80 1008.74 << 1007.96 13.90 1006.81 1009.25 << 14.00 1001.77 1005.19 14.10 994.40 999.50 14.20 984.69 991.02 14.30 972.29 980.49 14.40 957.06 966.85 14.50 939.22 950.57 14.60 919.38 931.70 14.70 897.38 911.21 14.80 873.89 888.20 14.90 848.74 864.40 15.00 822.23 838.35 15.10 794.75 811.54 15.20 766.08 783.62 15.30 700.58 754.45 15.40 658.04 664.85 15.50 623.57 653.52 15.60 590.74 603.71 15.70 565.05 582.15 15.80 538.03 553.72 15.90 514.46 527.63 16.00 489.09 505.73 16.10 466.17 478.06 16.20 441.58 458.28 16.30 419.03 430.50 16.40 395.54 411.42 16.50 374.57 385.00 16.60 354.62 367.66 16.70 337.96 345.97 16.80 321.15 332.65 16.90 305.86 313.53 17.00 290.15 300.78 17.10 275.56 283.10 17.20 260.63 270.55 17.30 246.83 254.05 17.40 233.27 242.04 17.50 221.70 227.46 17.60 211.50 217.89 Page 2 Continues on next page... Reach 4 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 17.70 203.28 207.27 17.80 195.92 200.63 17.90 189.89 192.80 18.00 184.32 187.96 18.10 179.63 181.90 18.20 175.16 178.12 18.30 171.31 173.20 18.40 167.56 170.05 18.50 164.26 165.91 18.60 161.01 163.17 18.70 158.11 159.58 18.80 155.22 157.13 18.90 152.61 153.96 19.00 150.00 151.71 19.10 147.61 148.87 19.20 145.23 146.78 19.30 143.01 144.20 19.40 140.80 142.23 19.50 138.71 139.85 19.60 136.62 137.96 19.70 134.63 135.73 19.80 132.63 133.90 19.90 130.72 131.79 20.00 128.79 130.00 20.10 126.93 127.99 20.20 125.06 126.23 20.30 123.26 124.29 20.40 121.45 122.57 20.50 119.69 120.70 20.60 117.94 119.02 20.70 116.24 117.22 20.80 114.56 115.59 20.90 112.93 113.87 21.00 111.32 112.30 21.10 109.76 110.66 21.20 108.24 109.16 21.30 106.78 107.63 21.40 105.35 106.21 21.50 103.99 104.79 21.60 102.68 103.47 21.70 101.42 102.15 21.80 100.21 100.93 21.90 99.05 99.73 22.00 97.95 98.61 22.10 96.90 97.51 22.20 95.89 96.49 22.30 94.94 95.49 22.40 94.03 94.57 22.50 93.17 93.67 Page 3 Continues on next page... Reach 4 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 22.60 92.35 92.84 22.70 91.58 92.03 22.80 90.84 91.28 22.90 90.14 90.55 23.00 89.48 89.87 23.10 88.85 89.22 23.20 88.25 88.61 23.30 87.68 88.01 23.40 87.13 87.46 23.50 86.61 86.92 23.60 86.10 86.40 23.70 85.62 85.90 23.80 85.15 85.43 23.90 84.70 84.96 24.00 84.26 84.52 24.10 83.81 84.08 24.20 83.32 83.62 24.30 82.70 83.12 24.40 81.91 82.42 24.50 80.93 81.57 24.60 79.75 80.51 24.70 78.36 79.24 24.80 76.74 77.77 24.90 74.92 76.07 25.00 72.87 74.16 25.10 70.61 72.02 25.20 68.12 69.67 25.30 65.41 67.09 25.40 62.53 64.30 25.50 59.50 61.35 25.60 56.42 58.27 25.70 53.33 55.20 25.80 50.23 52.10 25.90 47.12 48.99 26.00 44.06 45.88 26.10 41.06 42.85 26.20 38.13 39.87 26.30 35.26 36.97 26.40 32.49 34.14 26.50 29.82 31.40 26.60 27.28 28.78 26.70 24.86 26.28 26.80 22.59 23.92 26.90 20.45 21.70 27.00 18.46 19.62 27.10 16.61 17.68 27.20 14.90 15.90 27.30 13.35 14.25 27.40 11.93 12.75 Page 4 Continues on next page... Reach 4 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 27.50 10.67 11.39 27.60 9.53 10.18 Page 5 ...End Hydrograph Report Page 1 English Hyd. No. 12 Subbasin 8 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 16.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 76.70 cfs Time interval = 6 min Curve number = 65 Hydraulic length = 0 ft Time of conc. (Tc) = 34 min Distribution = Type II Shape factor = 484 Total Volume = 385,278 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 9.20 0.82 12.40 68.34 15.60 4.48 18.80 2.70 9.30 0.89 12.50 58.91 15.70 4.38 18.90 2.66 9.40 0.96 12.60 48.58 15.80 4.27 19.00 2.63 9.50 1.03 12.70 37.85 15.90 4.17 19.10 2.59 9.60 1.09 12.80 27.56 16.00 4.06 19.20 2.55 9.70 1.16 12.90 18.92 16.10 3.96 19.30 2.51 9.80 1.23 13.00 14.36 16.20 3.86 19.40 2.47 9.90 1.32 13.10 12.81 16.30 3.77 19.50 2.43 10.00 1.41 13.20 11.57 16.40 3.69 19.60 2.39 10.10 1.52 13.30 10.59 16.50 3.62 19.70 2.36 10.20 1.64 13.40 9.83 16.60 3.56 19.80 2.32 10.30 1.78 13.50 9.23 16.70 3.51 19.90 2.28 10.40 1.94 13.60 8.72 16.80 3.46 20.00 2.24 10.50 2.12 13.70 8.25 16.90 3.42 20.10 2.20 10.60 2.32 13.80 7.82 17.00 3.38 20.20 2.16 10.70 2.54 13.90 7.44 17.10 3.34 20.30 2.13 10.80 2.79 14.00 7.08 17.20 3.31 20.40 2.10 10.90 3.07 14.10 6.75 17.30 3.27 20.50 2.08 11.00 3.38 14.20 6.45 17.40 3.23 20.60 2.06 11.10 3.71 14.30 6.18 17.50 3.20 20.70 2.05 11.20 4.09 14.40 5.95 17.60 3.16 20.80 2.04 11.30 4.56 14.50 5.76 17.70 3.12 20.90 2.03 11.40 5.13 14.60 5.59 17.80 3.08 21.00 2.02 11.50 5.87 14.70 5.45 17.90 3.04 21.10 2.02 11.60 7.24 14.80 5.32 18.00 3.01 21.20 2.01 11.70 10.29 14.90 5.21 18.10 2.97 21.30 2.00 11.80 16.69 15.00 5.11 18.20 2.93 21.40 1.99 11.90 30.44 15.10 5.00 18.30 2.89 21.50 1.99 12.00 48.76 15.20 4.90 18.40 2.85 21.60 1.98 12.10 65.09 15.30 4.80 18.50 2.82 21.70 1.97 12.20 76.57 15.40 4.69 18.60 2.78 21.80 1.96 12.30 76.70 << 15.50 4.59 18.70 2.74 21.90 1.96 Continues on next page... Subbasin 8 Hydrograph Discharge Table Time Outflow (hrs cfs) 22.00 1.95 22.10 1.94 22.20 1.93 22.30 1.93 22.40 1.92 22.50 1.91 22.60 1.90 22.70 1.90 22.80 1.89 22.90 1.88 23.00 1.87 23.10 1.87 23.20 1.86 23.30 1.85 23.40 1.84 23.50 1.84 23.60 1.83 23.70 1.82 23.80 1.81 23.90 1.81 24.00 1.80 24.10 1.71 24.20 1.54 24.30 1.30 24.40 0.97 Page 2 End TR55 Tc Worksheet Hyd. No. 12 Subbasin 8 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 76.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 31.1 min Shallow Concentrated Flow Flow length = 0 ft Watercourse slope = 0.0 % Surface description = Unpaved Average velocity = 0.00 ft/s Travel Time = 0.0 min Channel Flow Cross section flow area = 125.0 sqft Wetted perimeter = 32.4 ft Channel slope = 0.3 % Manning's n-value = 0.015 Velocity = 14.53 ft/s Flow length = 2570.0 ft Travel Time = 2.9 min Page 1 Total Travel Time, Tc = 34.0 min Hydrograph Report Page 1 English Hyd. No. 13 Subbasin 7 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 53.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 147.85 cfs Time interval = 6 min Curve number = 75 Hydraulic length = 0 ft Time of conc. (Tc) = 107.6 min Distribution = Type II Shape factor = 484 Total Volume = 1,486,064 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7.50 1.51 10.70 8.93 13.90 91.06 17.10 13.45 7.60 1.63 10.80 9.47 14.00 83.40 17.20 13.19 7.70 1.75 10.90 10.06 14.10 75.64 17.30 12.94 7.80 1.87 11.00 10.72 14.20 67.82 17.40 12.71 7.90 2.00 11.10 11.43 14.30 59.96 17.50 12.49 8.00 2.12 11.20 12.22 14.40 52.10 17.60 12.28 8.10 2.25 11.30 13.13 14.50 44.45 17.70 12.08 8.20 2.38 11.40 14.17 14.60 37.42 17.80 11.89 8.30 2.52 11.50 15.36 14.70 31.56 17.90 11.71 8.40 2.66 11.60 17.03 14.80 28.10 18.00 11.54 8.50 2.81 11.70 19.79 14.90 26.38 18.10 11.38 8.60 2.96 11.80 24.54 15.00 24.93 18.20 11.23 8.70 3.12 11.90 33.26 15.10 23.70 18.30 11.08 8.80 3.29 12.00 44.83 15.20 22.65 18.40 10.94 8.90 3.48 12.10 56.79 15.30 21.76 18.50 10.80 9.00 3.67 12.20 69.09 15.40 20.96 18.60 10.66 9.10 3.88 12.30 81.58 15.50 20.23 18.70 10.53 9.20 4.10 12.40 94.15 15.60 19.58 18.80 10.39 9.30 4.34 12.50 106.67 15.70 18.97 18.90 10.26 9.40 4.58 12.60 119.06 15.80 18.42 19.00 10.13 9.50 4.84 12.70 130.75 15.90 17.90 19.10 9.99 9.60 5.10 12.80 140.72 16.00 17.41 19.20 9.86 9.70 5.37 12.90 147.51 16.10 16.96 19.30 9.73 9.80 5.65 13.00 147.85 << 16.20 16.52 19.40 9.59 9.90 5.94 13.10 143.56 16.30 16.11 19.50 9.46 10.00 6.24 13.20 138.51 16.40 15.72 19.60 9.33 10.10 6.55 13.30 132.83 16.50 15.35 19.70 9.19 10.20 6.88 13.40 126.61 16.60 15.00 19.80 9.06 10.30 7.23 13.50 119.99 16.70 14.66 19.90 8.93 10.40 7.60 13.60 113.06 16.80 14.34 20.00 8.79 10.50 8.00 13.70 105.92 16.90 14.03 20.10 8.66 10.60 8.45 13.80 98.57 17.00 13.73 20.20 8.53 Continues on next page... Subbasin 7 Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 20.30 8.40 20.40 8.27 20.50 8.14 20.60 8.02 20.70 7.90 20.80 7.79 20.90 7.68 21.00 7.58 21.10 7.49 21.20 7.40 21.30 7.32 21.40 7.25 21.50 7.18 21.60 7.12 21.70 7.07 21.80 7.01 21.90 6.97 22.00 6.92 22.10 6.88 22.20 6.85 22.30 6.81 22.40 6.78 22.50 6.75 22.60 6.72 22.70 6.70 22.80 6.67 22.90 6.64 23.00 6.62 23.10 6.59 23.20 6.57 23.30 6.54 23.40 6.51 23.50 6.49 23.60 6.46 23.70 6.43 23.80 6.41 23.90 6.38 24.00 6.35 24.10 6.29 24.20 6.19 24.30 6.05 24.40 5.87 24.50 5.66 24.60 5.41 24.70 5.12 24.80 4.80 24.90 4.44 25.00 4.05 25.10 3.62 25.20 3.21 25.30 2.83 25.40 2.47 25.50 2.14 25.60 1.83 25.70 1.55 End Page 2 TR55 Tc Worksheet Hyd. No. 13 Subbasin 7 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.400 Flow length = 268.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 91.5 min Shallow Concentrated Flow Flow length = 1700 ft Watercourse slope = 1.2 % Surface description = Unpaved Average velocity = 1.77 ft/s Travel Time = 16.0 min Channel Flow Cross section flow area = 0.0 sqft Wetted perimeter = 0.0 ft Channel slope = 0.0 % Manning's n-value = 0.015 Velocity = 0.00 ft/s Flow length = 0.0 ft Travel Time = min Page 1 Total Travel Time, Tc = 107.6 min Hydrograph Report Page 1 English Hyd. No. 14 Sub 7 and Sub 8 Hydrograph type = Combine Peak discharge = 168.60 cfs Storm frequency = 100 yrs Time interval = 6 min 1st inflow hyd. No. = 12 2nd inflow hyd. No: 13 Total Volume = 1,871,341 cuft Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 7.60 0.07 1.63 1.70 7.70 0.10 1.75 1.85 7.80 0.13 1.87 2.00 7.90 0.16 2.00 2.16 8.00 0.19 2.12 2.31 8.10 0.22 2.25 2.48 8.20 0.26 2.38 2.64 8.30 0.29 2.52 2.81 8.40 0.34 2.66 3.00 8.50 0.38 2.81 3.19 8.60 0.43 2.96 3.39 8.70 0.48 3.12 3.60 8.80 0.54 3.29 3.83 8.90 0.60 3.48 4.08 9.00 0.67 3.67 4.34 9.10 0.74 3.88 4.62 9.20 0.82 4.10 4.92 9.30 0.89 4.34 5.23 9.40 0.96 4.58 5.54 9.50 1.03 4.84 5.87 9.60 1.09 5.10 6.19 9.70 1.16 5.37 6.53 9.80 1.23 5.65 6.88 9.90 1.32 5.94 7.25 10.00 1.41 6.24 7.65 10.10 1.52 6.55 8.07 10.20 1.64 6.88 8.52 10.30 1.78 7.23 9.01 10.40 1.94 7.60 9.54 10.50 2.12 8.00 10.13 10.60 2.32 8.45 10.77 10.70 2.54 8.93 11.47 10.80 2.79 9.47 12.26 10.90 3.07 10.06 13.13 11.00 3.38 10.72 14.10 11.10 3.71 11.43 15.13 Continues on next page. Sub 7 and Sub 8 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 11.20 4.09 12.22 16.32 11.30 4.56 13.13 17.69 11.40 5.13 14.17 19.30 11.50 5.87 15.36 21.23 11.60 7.24 17.03 24.26 11.70 10.29 19.79 30.08 11.80 16.69 24.54 41.23 11.90 30.44 33.26 63.71 12.00 48.76 44.83 93.59 12.10 65.09 56.79 121.88 12.20 76.57 69.09 145.66 12.30 76.70 << 81.58 158.28 12.40 68.34 94.15 162.49 12.50 58.91 106.67 165.58 12.60 48.58 119.06 167.63 12.70 37.85 130.75 168.60 << 12.80 27.56 140.72 168.29 12.90 18.92 147.51 166.43 13.00 14.36 147.85 << 162.21 13.10 12.81 143.56 156.36 13.20 11.57 138.51 150.08 13.30 10.59 132.83 143.42 13.40 9.83 126.61 136.45 13.50 9.23 119.99 129.22 13.60 8.72 113.06 121.78 13.70 8.25 105.92 114.16 13.80 7.82 98.57 106.40 13.90 7.44 91.06 98.50 14.00 7.08 83.40 90.49 14.10 6.75 75.64 82.40 14.20 6.45 67.82 74.27 14.30 6.18 59.96 66.14 14.40 5.95 52.10 58.05 14.50 5.76 44.45 50.21 14.60 5.59 37.42 43.01 14.70 5.45 31.56 37.00 14.80 5.32 28.10 33.43 14.90 5.21 26.38 31.60 15.00 5.11 24.93 30.03 15.10 5.00 23.70 28.70 15.20 4.90 22.65 27.55 15.30 4.80 21.76 26.55 15.40 4.69 20.96 25.65 15.50 4.59 20.23 24.82 15.60 4.48 19.58 24.06 15.70 4.38 18.97 23.35 15.80 4.27 18.42 22.69 15.90 4.17 17.90 22.07 16.00 4.06 17.41 21.48 Page 2 Continues on next page... Sub 7 and Sub 8 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 16.10 3.96 16.96 20.91 16.20 3.86 16.52 20.38 16.30 3.77 16.11 19.88 16.40 3.69 15.72 19.41 16.50 3.62 15.35 18.97 16.60 3.56 15.00 18.56 16.70 3.51 14.66 18.17 16.80 3.46 14.34 17.80 16.90 3.42 14.03 17.45 17.00 3.38 13.73 17.12 17.10 3.34 13.45 16.80 17.20 3.31 13.19 16.50 17.30 3.27 12.94 16.21 17.40 3.23 12.71 15.94 17.50 3.20 12.49 15.68 17.60 3.16 12.28 15.43 17.70 3.12 12.08 15.20 17.80 3.08 11.89 14.97 17.90 3.04 11.71 14.76 18.00 3.01 11.54 14.55 18.10 2.97 11.38 14.35 18.20 2.93 11.23 14.16 18.30 2.89 11.08 13.97 18.40 2.85 10.94 13.79 18.50 2.82 10.80 13.61 18.60 2.78 10.66 13.44 18.70 2.74 10.53 13.27 18.80 2.70 10.39 13.09 18.90 2.66 10.26 12.92 19.00 2.63 10.13 12.75 19.10 2.59 9.99 12.58 19.20 2.55 9.86 12.41 19.30 2.51 9.73 12.24 19.40 2.47 9.59 12.07 19.50 2.43 9.46 11.89 19.60 2.39 9.33 11.72 19.70 2.36 9.19 11.55 19.80 2.32 9.06 11.38 19.90 2.28 8.93 11.20 20.00 2.24 8.79 11.03 20.10 2.20 8.66 10.86 20.20 2.16 8.53 10.69 20.30 2.13 8.40 10.53 20.40 2.10 8.27 10.37 20.50 2.08 8.14 10.22 20.60 2.06 8.02 10.08 20.70 2.05 7.90 9.95 20.80 2.04 7.79 9.83 20.90 2.03 7.68 9.71 Page 3 Continues on next page... Sub 7 and Sub 8 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 21.00 2.02 7.58 9.60 21.10 2.02 7.49 9.50 21.20 2.01 7.40 9.41 21.30 2.00 7.32 9.32 21.40 1.99 7.25 9.24 21.50 1.99 7.18 9.17 21.60 1.98 7.12 9.10 21.70 1.97 7.07 9.04 21.80 1.96 7.01 8.98 21.90 1.96 6.97 8.92 22.00 1.95 6.92 8.87 22.10 1.94 6.88 8.83 22.20 1.93 6.85 8.78 22.30 1.93 6.81 8.74 22.40 1.92 6.78 8.70 22.50 1.91 6.75 8.66 22.60 1.90 6.72 8.63 22.70 1.90 6.70 8.59 22.80 1.89 6.67 8.56 22.90 1.88 6.64 8.53 23.00 1.87 6.62 8.49 23.10 1.87 6.59 8.46 23.20 1.86 6.57 8.42 23.30 1.85 6.54 8.39 23.40 1.84 6.51 8.36 23.50 1.84 6.49 8.32 23.60 1.83 6.46 8.29 23.70 1.82 6.43 8.25 23.80 1.81 6.41 8.22 23.90 1.81 6.38 8.19 24.00 1.80 6.35 8.15 24.10 1.71 6.29 8.00 24.20 1.54 6.19 7.73 24.30 1.30 6.05 7.35 24.40 0.97 5.87 6.84 24.50 0.69 5.66 6.35 24.60 0.46 5.41 5.87 24.70 0.28 5.12 5.40 24.80 0.14 4.80 4.94 24.90 0.05 4.44 4.49 25.00 0.00 4.05 4.05 25.10 0.00 3.62 3.62 25.20 0.00 3.21 3.21 25.30 0.00 2.83 2.83 25.40 0.00 2.47 2.47 25.50 0.00 2.14 2.14 25.60 0.00 1.83 1.83 Page 4 End Hydrograph Report Page 1 English Hyd. No. 25 Combine subs 7 & 8 and reach 4 Hydrograph type = Combine Peak discharge = 1119.27 cfs Storm frequency = 100 yrs Time interval = 6 min 1 st inflow hyd. No.= 14 2nd inflow hyd. No.= 21 Total Volume = 18,842,700 cuft Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 9.50 5.87 42.65 48.52 9.60 6.19 8.05 14.24 9,70 6.53 44.80 51.33 9.80 6.88 13.94 20.83 9.90 7.25 46.57 53.82 10.00 7.65 20.55 28.20 10.10 8.07 48.72 56.79 10.20 8.52 27.47 35.99 10.30 9.01 51.56 60.57 10.40 9.54 34.63 44.17 10.50 10.13 55.25 65.38 10.60 10.77 42.11 52.87 10.70 11.47 59.93 71.41 10.80 12.26 50.11 62.36 10.90 13.13 65.78 78.92 11.00 14.10 58.92 73.02 11.10 15.13 73.08 88.21 11.20 16.32 68.89 85.21 11.30 17.69 82.07 99.77 11.40 19.30 80.40 99.71 11.50 21.23 93.23 114.46 11.60 24.26 94.25 118.51 11.70 30.08 107.82 137.90 11.80 41.23 113.25 154.49 11.90 63.71 132.44 196.15 12.00 93.59 152.34 245.93 12.10 121.88 191.19 313.08 12.20 145.66 239.48 385.15 12.30 158.28 304.95 463.23 12.40 162.49 369.73 532.22 12.50 165.58 444.81 610.39 12.60 167.63 517.78 685.42 12.70 168.60 << 597.40 765.99 12.80 168.29 674.28 842.57 12.90 166.43 755.37 921.79 13.00 162.21 832.93 995.13 Continues on next page... Combine subs 7 & 8 and reach 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 13.10 156.36 870.67 1027.03 13.20 150.08 897.26 1047.34 13.30 143.42 939.47 1082.88 13.40 136.45 961.86 1098.31 13.50 129.22 985.53 1114.75 13.60 121.78 995.35 1117.13 13.70 114.16 1005.10 1119.27 << 13.80 106.40 1007.96 1114.36 13.90 98.50 1009.25 << 1107.75 14.00 90.49 1005.19 1095.68 14.10 82.40 999.50 1081.90 14.20 74.27 991.02 1065.29 14.30 66.14 980.49 1046.63 14.40 58.05 966.85 1024.90 14.50 50.21 950.57 1000.78 14.60 43.01 931.70 974.70 14.70 37.00 911.21 948.22 14.80 33.43 888.20 921.63 14.90 31.60 864.40 896.00 15.00 30.03 838.35 868.39 15.10 28.70 811.54 840.24 15.20 27.55 783.62 811.18 15.30 26.55 754.45 781.01 15.40 25.65 664.85 690.51 15.50 24.82 653.52 678.35 15.60 24.06 603.71 627.77 15.70 23.35 582.15 605.50 15.80 22.69 553.72 576.41 15.90 22.07 527.63 549.70 16.00 21.48 505.73 527.21 16.10 20.91 478.06 498.97 16.20 20.38 458.28 478.67 16.30 19.88 430.50 450.38 16.40 19.41 411.42 430.83 16.50 18.97 385.00 403.97 16.60 18.56 367.66 386.22 16.70 18.17 345.97 364.14 16.80 17.80 332.65 350.45 16.90 17.45 313.53 330.98 17.00 17.12 300.78 317.90 17.10 16.80 283.10 299.90 17.20 16.50 270.55 287.05 17.30 16.21 254.05 270.26 17.40 15.94 242.04 257.98 17.50 15.68 227.46 243.14 17.60 15.43 217.89 233.32 17.70 15.20 207.27 222.47 17.80 14.97 200.63 215.60 17.90 14.76 192.80 207.56 Page 2 Continues on next page... Combine subs 7 & 8 and reach 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 18.00 14.55 187.96 202.51 18.10 14.35 181.90 196.25 18.20 14.16 178.12 192.28 18.30 13.97 173.20 187.17 18.40 13.79 170.05 183.84 18.50 13.61 165.91 179.52 18.60 13.44 163.17 176.61 18.70 13.27 159.58 172.85 18.80 13.09 157.13 170.22 18.90 12.92 153.96 166.88 19.00 12.75 151.71 164.46 19.10 12.58 148.87 161.45 19.20 12.41 146.78 159.19 19.30 12.24 144.20 156.44 19.40 12.07 142.23 154.29 19.50 11.89 139.85 151.74 19.60 11.72 137.96 149.68 19.70 11.55 135.73 147.28 19.80 11.38 133.90 145.28 19.90 11.20 131.79 142.99 20.00 11.03 130.00 141.04 20.10 10.86 127.99 138.85 20.20 10.69 126.23 136.92 20.30 10.53 124.29 134.82 20.40 10.37 122.57 132.94 20.50 10.22 120.70 130.92 20.60 10.08 119.02 129.10 20.70 9.95 117.22 127.18 20.80 9.83 115.59 125.42 20.90 9.71 113.87 123.58 21.00 9.60 112.30 121.90 21.10 9.50 110.66 120.17 21.20 9.41 109.16 118.57 21.30 9.32 107.63 116.95 21.40 9.24 106.21 115.46 21.50 9.17 104.79 113.95 21.60 9.10 103.47 112.57 21.70 9.04 102.15 111.19 21.80 8.98 100.93 109.91 21.90 8.92 99.73 108.65 22.00 8.87 98.61 107.48 22.10 8.83 97.51 106.33 22.20 8.78 96.49 105.27 22.30 8.74 95.49 104.23 22.40 8.70 94.57 103.27 22.50 8.66 93.67 102.33 22.60 8.63 92.84 101.46 22.70 8.59 92.03 100.62 22.80 8.56 91.28 99.83 Page 3 Continues on next page... Combine subs 7 & 8 and reach 4 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 22.90 8.53 90.55 99.07 23.00 8.49 89.87 98.36 23.10 8.46 89.22 97.67 23.20 8.42 88.61 97.03 23.30 8.39 88.01 96.40 23.40 8.36 87.46 95.81 23.50 8.32 86.92 95.24 23.60 8.29 86.40 94.69 23.70 8.25 85.90 94.16 23.80 8.22 85.43 93.65 23.90 8.19 84.96 93.15 24.00 8.15 84.52 92.67 24.10 8.00 84.08 92.08 24.20 7.73 83.62 91.35 24.30 7.35 83.12 90.46 24.40 6.84 82.42 89.27 24.50 6.35 81.57 87.92 24.60 5.87 80.51 86.38 24.70 5.40 79.24 84.64 24.80 4.94 77.77 82.71 24.90 4.49 76.07 80.55 25.00 4.05 74.16 78.20 25.10 3.62 72.02 75.63 25.20 3.21 69.67 72.88 25.30 2.83 67.09 69.92 25.40 2.47 64.30 66.77 25.50 2.14 61.35 63.49 25.60 1.83 58.27 60.10 25.70 1.55 55.20 56.75 25.80 1.29 52.10 53.38 25.90 1.05 48.99 50.04 26.00 0.84 45.88 46.72 26.10 0.65 42.85 43.50 26.20 0.49 39.87 40.36 26.30 0.35 36.97 37.32 26.40 0.23 34.14 34.37 26.50 0.14 31.40 31.54 26.60 0.07 28.78 28.85 26.70 0.02 26.28 26.30 26.80 0.00 23.92 23.92 26.90 0.00 21.70 21.70 27.00 0.00 19.62 19.62 27.10 0.00 17.68 17.68 27.20 0.00 15.90 15.90 27.30 0.00 14.25 14.25 27.40 0.00 12.75 12.75 27.50 0.00 11.39 11.39 Page 4 End Hydrograph Report Page 1 English Hyd. No. 26 Reach 5 Hydrograph type = Reach Peak discharge = 1124.37 cfs Storm frequency = 100 yrs Time interval = 6 min Inflow hyd. No. = 25 Section type = Trapezoidal Reach length = 380.0 ft Channel slope = 0.2% Manning's n = 0.400 Bottom width = 25.0 ft Side slope = 2.0:1 Max. depth = 6.0 ft Rating curve x = 0.019 Rating curve m = 1.519 Ave. velocity = 5.34 ft/s Routing coeff. = 1.5868 Modified Att-Kin routing method used. Total Volume = 18,842,700 cuft Hydrograph Discharge Table Time Inflow O utflow (hrs) cfs cfs 9.60 14.24 71.27 9.80 20.83 92.72 10.00 28.20 97.95 10.20 35.99 97.58 10.40 44.17 96.20 10.50 65.38 13.64 10.60 52.87 95.74 10.70 71.41 27.72 10.80 62.36 97.05 10.90 78.92 42.01 11.00 73.02 100.57 11.10 88.21 56.85 11.20 85.21 106.61 11.30 99.77 72.65 11.40 99.71 115.68 11.50 114.46 90.33 11.60 118.51 128.62 11.70 137.90 112.58 11.80 154.49 152.77 11.90 196.15 155.49 12.00 245.93 220.00 12.10 313.08 261.14 12.20 385.15 343.56 12.30 463.23 409.55 12.40 532.22 494.73 12.50 610.39 554.22 12.60 685.42 643.35 12.70 765.99 710.10 12.80 842.57 798.79 12.90 921.79 868.26 13.00 995.13 953.21 13.10 1027.03 1019.73 Continues on next page... Reach 5 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 13.20 1047.34 1031.31 13.30 1082.88 1056.74 13.40 1098.31 1098.22 13.50 1114.75 1098.36 13.60 1117.13 1124.37 << 13.70 1119.27 << 1112.89 13.80 1114.36 1123.01 13.90 1107.75 1109.28 14.00 1095.68 1106.85 14.10 1081.90 1089.12 14.20 1065.29 1077.66 14.30 1046.63 1058.04 14.40 1024.90 1039.94 14.50 1000.78 1016.08 14.60 974.70 991.80 14.70 948.22 964.67 14.80 921.63 938.56 14.90 896.00 911.69 15.00 868.39 886.79 15.10 840.24 857.59 15.20 811.18 830.06 15.30 781.01 800.10 15.40 690.51 769.80 15.50 678.35 643.97 15.60 627.77 698.52 15.70 605.50 586.25 15.80 576.41 616.80 15.90 549.70 552.71 16.00 527.21 547.94 16.10 498.97 515.05 16.20 478.67 489.54 16.30 450.38 472.29 16.40 430.83 437.53 16.50 403.97 426.90 16.60 386.22 390.52 16.70 364.14 383.69 16.80 350.45 352.66 16.90 330.98 349.15 17.00 317.90 320.31 17.10 299.90 316.48 17.20 287.05 290.17 17.30 270.26 285.22 17.40 257.98 261.48 17.50 243.14 255.92 17.60 233.32 235.64 17.70 222.47 231.96 17.80 215.60 216.90 17.90 207.56 214.85 18.00 202.51 203.28 Page 2 Continues on next page... Reach 5 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 18.10 196.25 202.06 18.20 192.28 192.85 18.30 187.17 191.95 18.40 183.84 184.37 18.50 179.52 183.54 18.60 176.61 177.16 18.70 172.85 176.28 18.80 170.22 170.84 18.90 166.88 169.86 19.00 164.46 165.14 19.10 161.45 164.07 19.20 159.19 159.92 19.30 156.44 158.76 19.40 154.29 155.07 19.50 151.74 153.83 19.60 149.68 150.51 19.70 147.28 149.19 19.80 145.28 146.16 19.90 142.99 144.77 20.00 141.04 141.95 20.10 138.85 140.50 20.20 136.92 137.88 20.30 134.82 136.36 20.40 132.94 133.91 20.50 130.92 132.37 20.60 129.10 130.08 20.70 127.18 128.53 20.80 125.42 126.38 20.90 123.58 124.85 21.00 121.90 122.84 21.10 120.17 121.35 21.20 118.57 119.47 21.30 116.95 118.04 21.40 115.46 116.31 21.50 113.95 114.95 21.60 112.57 113.37 21.70 111.19 112.10 21.80 109.91 110.65 21.90 108.65 109.47 22.00 107.48 108.17 22.10 106.33 107.08 22.20 105.27 105.90 22.30 104.23 104.90 22.40 103.27 103.84 22.50 102.33 102.94 22.60 101.46 101.98 22.70 100.62 101.16 22.80 99.83 100.30 22.90 99.07 99.56 Page 3 Continues on next page... Reach 5 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 23.00 98.36 98.79 23.10 97.67 98.11 23.20 97.03 97.42 23.30 96.40 96.80 23.40 95.81 96.17 23.50 95.24 95.60 23.60 94.69 95.02 23.70 94.16 94.49 23.80 93.65 93.96 23.90 93.15 93.47 24.00 92.67 92.96 24.10 92.08 92.50 24.20 91.35 91.84 24.30 90.46 91.07 24.40 89.27 90.11 24.50 87.92 88.77 24.60 86.38 87.42 24.70 84.64 85.77 24.80 82.71 83.98 24.90 80.55 81.95 25.00 78.20 79.73 25.10 75.63 77.31 25.20 72.88 74.65 25.30 69.92 71.84 25.40 66.77 68.79 25.50 63.49 65.59 25.60 60.10 62.26 25.70 56.75 58.83 25.80 53.38 55.52 25.90 50.04 52.13 26.00 46.72 48.82 26.10 43.50 45.49 26.20 40.36 42.34 26.30 37.32 39.20 26.40 34.37 36.21 26.50 31.54 33.29 26.60 28.85 30.51 26.70 26.30 27.88 26.80 23.92 25.38 26.90 21.70 23.07 27.00 19.62 20.89 27.10 17.68 18.88 27.20 15.90 16.98 27.30 14.25 15.26 27.40 12.75 13.65 27.50 11.39 12.22 Page 4 End Hydrograph Report Page 1 English Hyd. No. 22 Subbasin 9 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 8.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 28.16 cfs Time interval = 6 min Curve number = 75 Hydraulic length = 0 ft Time of conc. (Tc) = 71.6 min Distribution = Type II Shape factor = 484 Total Volume = 223,345 cult Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7.50 0.29 10.70 1.59 13.90 6.11 17.10 1.86 7.60 0.31 10.80 1.70 14.00 5.23 17.20 1.83 7.70 0.33 10.90 1.82 14.10 4.83 17.30 1.81 7.80 0.35 11.00 1.95 14.20 4.50 17.40 1.78 7.90 0.37 11.10 2.09 14.30 4.22 17.50 1.75 8.00 0.39 11.20 2.25 14.40 3.98 17.60 1.73 8.10 0.41 11.30 2.44 14.50 3.78 17.70 1.71 8.20 0.43 11.40 2.66 14.60 3.61 17.80 1.69 8.30 0.45 11.50 2.91 14.70 3.45 17.90 1.67 8.40 0.47 11.60 3.28 14.80 3.31 18.00 1.65 8.50 0.50 11.70 3.96 14.90 3.19 18.10 1.63 8.60 0.53 11.80 5.19 15.00 3.08 18.20 1.61 8.70 0.55 11.90 7.55 15.10 2.98 18.30 1.59 8.80 0.58 12.00 10.70 15.20 2.89 18.40 1.57 8.90 0.62 12.10 13.93 15.30 2.81 18.50 1.55 9.00 0.66 12.20 17.22 15.40 2.74 18.60 1.53 9.10 0.70 12.30 20.53 15.50 2.67 18.70 1.51 9.20 0.74 12.40 23.68 15.60 2.61 18.80 1.49 9.30 0.78 12.50 26.37 15.70 2.54 18.90 1.47 9.40 0.82 12.60 28.16 << 15.80 2.49 19.00 1.45 9.50 0.87 12.70 28.14 15.90 2.43 19.10 1.43 9.60 0.92 12.80 26.80 16.00 2.37 19.20 1.41 9.70 0.96 12.90 25.27 16.10 2.32 19.30 1.39 9.80 1.01 13.00 23.57 16.20 2.26 19.40 1.37 9.90 1.05 13.10 21.74 16.30 2.21 19.50 1.35 10.00 1.10 13.20 19.80 16.40 2.16 19.60 1.33 10.10 1.15 13.30 17.81 16.50 2.11 19.70 1.31 10.20 1.21 13.40 15.77 16.60 2.06 19.80 1.29 10.30 1.27 13.50 13.69 16.70 2.01 19.90 1.27 10.40 1.34 13.60 11.60 16.80 1.97 20.00 1.25 10.50 1.41 13.70 9.56 16.90 1.93 20.10 1.23 10.60 1.50 13.80 7.67 17.00 1.90 20.20 1.21 Continues on next page... Subbasin 9 Hydrograph Discharge Table Time Outflow Time Outflow (hrs cfs) (hrs cfs) 20.30 1.19 20.40 1.17 20.50 1.15 20.60 1.14 20.70 1.12 20.80 1.11 20.90 1.09 21.00 1.08 21.10 1.07 21.20 1.06 21.30 1.06 21.40 1.05 21.50 1.04 21.60 1.04 21.70 1.03 21.80 1.03 21.90 1.02 22.00 1.02 22.10 1.02 22.20 1.01 22.30 1.01 22.40 1.00 22.50 1.00 22.60 1.00 22.70 0.99 22.80 0.99 22.90 0.98 23.00 0.98 23.10 0.98 23.20 0.97 23.30 0.97 23.40 0.96 23.50 0.96 23.60 0.96 23.70 0.95 23.80 0.95 23.90 0.94 24.00 0.94 24.10 0.93 24.20 0.90 24.30 0.86 24.40 0.82 24.50 0.76 24.60 0.69 24.70 0.61 24.80 0.53 24.90 0.44 25.00 0.37 25.10 0.30 End Page 2 TR55 Tc Worksheet Hyd. No. 22 Subbasin 9 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.240 Flow length = 300.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 66.6 min Shallow Concentrated Flow Flow length = 725 ft Watercourse slope = 2.2 % Surface description = Unpaved Average velocity = 2.39 ft/s Travel Time = 5.0 min Channel Flow Cross section flow area Wetted perimeter Channel slope Manning's n-value Velocity Flow length = 0.0 sqft = 0.0 ft = 0.0 % = 0.015 = 0.00 ft/s = 0.0 ft Travel Time = min Page 1 Total Travel Time, Tc = 71.6 min Hydrograph Report Page 1 English Hyd. No. 23 Subbasin 10 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 15.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 52.81 cfs Time interval = 6 min Curve number = 75 Hydraulic length = 0 ft Time of conc. (Tc) = 74.3 min Distribution = Type II Shape factor = 484 Total Volume = 418,771 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7.50 0.55 10.70 2.99 13.90 11.45 17.10 3.50 7.60 0.58 10.80 3.18 14.00 9.80 17.20 3.44 7.70 0.62 10.90 3.40 14.10 9.06 17.30 3.39 7.80 0.66 11.00 3.65 14.20 8.43 17.40 3.34 7.90 0.69 11.10 3.91 14.30 7.91 17.50 3.29 8.00 0.73 11.20 4.22 14.40 7.47 17.60 3.25 8.10 0.77 11.30 4.57 14.50 7.10 17.70 3.21 8.20 0.81 11.40 4.98 14.60 6.77 17.80 3.17 8.30 0.85 11.50 5.45 14.70 6.47 17.90 3.13 8.40 0.89 11.60 6.16 14.80 6.21 18.00 3.09 8.50 0.94 11.70 7.43 14.90 5.98 18.10 3.05 8.60 0.98 11.80 9.74 15.00 5.78 18.20 3.02 8.70 1.04 11.90 14.16 15.10 5.59 18.30 2.98 8.80 1.10 12.00 20.06 15.20 5.43 18.40 2.94 8.90 1.16 12.10 26.12 15.30 5.27 18.50 2.90 9.00 1.23 12.20 32.29 15.40 5.14 18.60 2.87 9.10 1.30 12.30 38.49 15.50 5.01 18.70 2.83 9.20 1.38 12.40 44.40 15.60 4.89 18.80 2.79 9.30 1.46 12.50 49.44 15.70 4.77 18.90 2.75 9.40 1.55 12.60 52.81 << 15.80 4.66 19.00 2.72 9.50 1.63 12.70 52.76 15.90 4.55 19.10 2.68 9.60 1.72 12.80 50.25 16.00 4.45 19.20 2.64 9.70 1.80 12.90 47.38 16.10 4.35 19.30 2.60 9.80 1.89 13.00 44.20 16.20 4.24 19.40 2.57 9.90 1.98 13.10 40.76 16.30 4.14 19.50 2.53 10.00 2.07 13.20 37.13 16.40 4.04 19.60 2.49 10.10 2.16 13.30 33.39 16.50 3.95 19.70 2.45 10.20 2.27 13.40 29.56 16.60 3.86 19.80 2.42 10.30 2.38 13.50 25.68 16.70 3.78 19.90 2.38 10.40 2.51 13.60 21.75 16.80 3.70 20.00 2.34 10.50 2.65 13.70 17.92 16.90 3.62 20.10 2.30 10.60 2.81 13.80 14.38 17.00 3.56 20.20 2.26 Continues on next page... Subbasin 10 Hydrograph Discharge Table Time Outflow (hrs cfs) 20.30 2.23 20.40 2.19 20.50 2.16 20.60 2.13 20.70 2.10 20.80 2.07 20.90 2.05 21.00 2.03 21.10 2.01 21.20 1.99 21.30 1.98 21.40 1.97 21.50 1.96 21.60 1.94 21.70 1.94 21.80 1.93 21.90 1.92 22.00 1.91 22.10 1.90 22.20 1.90 22.30 1.89 22.40 1.88 22.50 1.87 22.60 1.87 22.70 1.86 22.80 1.85 22.90 1.85 23.00 1.84 23.10 1.83 23.20 1.82 23.30 1.82 23.40 1.81 23.50 1.80 23.60 1.79 23.70 1.79 23.80 1.78 23.90 1.77 24.00 1.76 24.10 1.74 24.20 1.69 24.30 1.62 24.40 1.53 24.50 1.43 24.60 1.30 24.70 1.15 24.80 0.99 24.90 0.83 25.00 0.69 25.10 0.57 Time Outflow (hrs cfs) End Page 2 TR55 Tc Worksheet Page 1 Hyd. No. 23 Subbasin 10 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.240 Flow length = 238.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 55.3 min Shallow Concentrated Flow Flow length = 1300 ft Watercourse slope = 0.5 % Surface description = Unpaved Average velocity = 1.14 ft/s Travel Time = 19.0 min Channel Flow Cross section flow area = 0.0 sqft Wetted perimeter = 0.0 ft Channel slope = 0.0 % Manning's n-value = 0.020 Velocity = 0.00 ft/s Flow length = 0.0 ft Travel Time = min Total Travel Time, Tc = 74.3 min Hydrograph Report Page 1 English Hyd. No. 24 Combine subs 9 and 10 Hydrograph type = Combine Peak discharge = 80.97 cfs Storm frequency = 100 yrs Time interval = 6 min 1 st inflow hyd. No.= 22 2nd inflow hyd. No: 23 Total Volume = 642,116 cuft Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 7.50 0.29 0.55 0.84 7.60 0.31 0.58 0.89 7.70 0.33 0.62 0.95 7.80 0.35 0.66 1.01 7.90 0.37 0.69 1.06 8.00 0.39 0.73 1.12 8.10 0.41 0.77 1.18 8.20 0.43 0.81 1.24 8.30 0.45 0.85 1.30 8.40 0.47 0.89 1.36 8.50 0.50 0.94 1.43 8.60 0.53 0.98 1.51 8.70 0.55 1.04 1.59 8.80 0.58 1.10 1.68 8.90 0.62 1.16 1.78 9.00 0.66 1.23 1.89 9.10 0.70 1.30 2.00 9.20 0.74 1.38 2.12 9.30 0.78 1.46 2.24 9.40 0.82 1.55 2.37 9.50 0.87 1.63 2.50 9.60 0.92 1.72 2.63 9.70 0.96 1.80 2.76 9.80 1.01 1.89 2.89 9.90 1.05 1.98 3.03 10.00 1.10 2.07 3.17 10.10 1.15 2.16 3.32 10.20 1.21 2.27 3.48 10.30 1.27 2.38 3.65 10.40 1.34 2.51 3.85 10.50 1.41 2.65 4.07 10.60 1.50 2.81 4.31 10.70 1.59 2.99 4.58 10.80 1.70 3.18 4.88 10.90 1.82 3.40 5.22 11.00 1.95 3.65 5.60 Continues on next page... Combine subs 9 and 10 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 11.10 2.09 3.91 6.00 11.20 2.25 4.22 6.47 11.30 2.44 4.57 7.01 11.40 2.66 4.98 7.63 11.50 2.91 5.45 8.36 11.60 3.28 6.16 9.44 11.70 3.96 7.43 11.39 11.80 5.19 9.74 14.93 11.90 7.55 14.16 21.71 12.00 10.70 20.06 30.76 12.10 13.93 26.12 40.06 12.20 17.22 32.29 49.51 12.30 20.53 38.49 59.02 12.40 23.68 44.40 68.09 12.50 26.37 49.44 75.81 12.60 28.16 << 52.81 << 80.97 << 12.70 28.14 52.76 80.89 12.80 26.80 50.25 77.05 12.90 25.27 47.38 72.65 13.00 23.57 44.20 67.77 13.10 21.74 40.76 62.50 13.20 19.80 37.13 56.94 13.30 17.81 33.39 51.19 13.40 15.77 29.56 45.33 13.50 13.69 25.68 39.37 13.60 11.60 21.75 33.36 13.70 9.56 17.92 27.47 13.80 7.67 14.38 22.05 13.90 6.11 11.45 17.56 14.00 5.23 9.80 15.03 14.10 4.83 9.06 13.89 14.20 4.50 8.43 12.93 14.30 4.22 7.91 12.13 14.40 3.98 7.47 11.45 14.50 3.78 7.10 10.88 14.60 3.61 6.77 10.38 14.70 3.45 6.47 9.93 14.80 3.31 6.21 9.53 14.90 3.19 5.98 9.17 15.00 3.08 5.78 8.86 15.10 2.98 5.59 8.58 15.20 2.89 5.43 8.32 15.30 2.81 5.27 8.09 15.40 2.74 5.14 7.87 15.50 2.67 5.01 7.68 15.60 2.61 4.89 7.49 15.70 2.54 4.77 7.31 15.80 2.49 4.66 7.15 15.90 2.43 4.55 6.98 Page 2 Continues on next page... Combine subs 9 and 10 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 16.00 2.37 4.45 6.82 16.10 2.32 4.35 6.66 16.20 2.26 4.24 6.51 16.30 2.21 4.14 6.35 16.40 2.16 4.04 6.20 16.50 2.11 3.95 6.06 16.60 2.06 3.86 5.92 16.70 2.01 3.78 5.79 16.80 1.97 3.70 5.67 16.90 1.93 3.62 5.56 17.00 1.90 3.56 5.45 17.10 1.86 3.50 5.36 17.20 1.83 3.44 5.27 17.30 1.81 3.39 5.19 17.40 1.78 3.34 5.12 17.50 1.75 3.29 5.04 17.60 1.73 3.25 4.98 17.70 1.71 3.21 4.92 17.80 1.69 3.17 4.85 17.90 1.67 3.13 4.80 18.00 1.65 3.09 4.74 18.10 1.63 3.05 4.68 18.20 1.61 3.02 4.62 18.30 1.59 2.98 4.57 18.40 1.57 2.94 4.51 18.50 1.55 2.90 4.45 18.60 1.53 2.87 4.40 18.70 1.51 2.83 4.34 18.80 1.49 2.79 4.28 18.90 1.47 2.75 4.22 19.00 1.45 2.72 4.17 19.10 1.43 2.68 4.11 19.20 1.41 2.64 4.05 19.30 1.39 2.60 3.99 19.40 1.37 2.57 3.93 19.50 1.35 2.53 3.88 19.60 1.33 2.49 3.82 19.70 1.31 2.45 3.76 19.80 1.29 2.42 3.70 19.90 1.27 2.38 3.65 20.00 1.25 2.34 3.59 20.10 1.23 2.30 3.53 20.20 1.21 2.26 3.47 20.30 1.19 2.23 3.42 20.40 1.17 2.19 3.36 20.50 1.15 2.16 3.31 20.60 1.14 2.13 3.26 20.70 1.12 2.10 3.22 20.80 1.11 2.07 3.18 Page 3 Continues on next page... Combine subs 9 and 10 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 20.90 1.09 2.05 3.14 21.00 1.08 2.03 3.11 21.10 1.07 2.01 3.08 21.20 1.06 1.99 3.06 21.30 1.06 1.98 3.04 21.40 1.05 1.97 3.02 21.50 1.04 1.96 3.00 21.60 1.04 1.94 2.98 21.70 1.03 1.94 2.97 21.80 1.03 1.93 2.96 21.90 1.02 1.92 2.94 22.00 1.02 1.91 2.93 22.10 1.02 1.90 2.92 22.20 1.01 1.90 2.91 22.30 1.01 1.89 2.90 22.40 1.00 1.88 2.89 22.50 1.00 1.87 2.87 22.60 1.00 1.87 2.86 22.70 0.99 1.86 2.85 22.80 0.99 1.85 2.84 22.90 0.98 1.85 2.83 23.00 0.98 1.84 2.82 23.10 0.98 1.83 2.81 23.20 0.97 1.82 2.79 23.30 0.97 1.82 2.78 23.40 0.96 1.81 2.77 23.50 0.96 1.80 2.76 23.60 0.96 1.79 2.75 23.70 0.95 1.79 2.74 23.80 0.95 1.78 2.73 23.90 0.94 1.77 2.71 24.00 0.94 1.76 2.70 24.10 0.93 1.74 2.66 24.20 0.90 1.69 2.59 24.30 0.86 1.62 2.48 24.40 0.82 1.53 2.35 24.50 0.76 1.43 2.19 24.60 0.69 1.30 1.99 24.70 0.61 1.15 1.77 24.80 0.53 0.99 1.51 24.90 0.44 0.83 1.28 25.00 0.37 0.69 1.06 25.10 0.30 0.57 0.87 Page 4 End Hydrograph Report Page 1 English Hyd. No. 27 Combine Reach 5 and subs 9 and 10 Hydrograph type = Combine Storm frequency = 100 yrs 1 st inflow hyd. No.= 24 Peak discharge = 1157.72 cfs Time interval = 6 min 2nd inflow hyd. No.= 26 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 9.40 2.37 9.21 11.58 9.50 2.50 9.75 12.25 9.60 2.63 71.27 73.90 9.80 2.89 92.72 95.62 10.00 3.17 97.95 101.12 10.20 3.48 97.58 101.06 10.40 3.85 96.20 100.05 10.50 4.07 13.64 17.71 10.60 4.31 95.74 100.05 10.70 4.58 27.72 32.30 10.80 4.88 97.05 101.93 10.90 5.22 42.01 47.23 11.00 5.60 100.57 106.17 11.10 6.00 56.85 62.85 11.20 6.47 106.61 113.08 11.30 7.01 72.65 79.65 11.40 7.63 115.68 123.32 11.50 8.36 90.33 98.69 11.60 9.44 128.62 138.06 11.70 11.39 112.58 123.97 11.80 14.93 152.77 167.70 11.90 21.71 155.49 177.21 12.00 30.76 220.00 250.76 12.10 40.06 261.14 301.20 12.20 49.51 343.56 393.07 12.30 59.02 409.55 468.57 12.40 68.09 494.73 562.82 12.50 75.81 554.22 630.03 12.60 80.97 << 643.35 724.32 12.70 80.89 710.10 790.99 12.80 77.05 798.79 875.85 12.90 72.65 868.26 940.91 13.00 67.77 953.21 1020.98 13.10 62.50 1019.73 1082.24 13.20 56.94 1031.31 1088.25 13.30 51.19 1056.74 1107.93 Total Volume = 19,484,810 cuft Continues on next page... Combine Reach 5 and subs 9 and 10 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 13.40 45.33 1098.22 1143.55 13.50 39.37 1098.36 1137.73 13.60 33.36 1124.37 << 1157.72 << 13.70 27.47 1112.89 1140.36 13.80 22.05 1123.01 1145.06 13.90 17.56 1109.28 1126.85 14.00 15.03 1106.85 1121.88 14.10 13.89 1089.12 1103.00 14.20 12.93 1077.66 1090.58 14.30 12.13 1058.04 1070.17 14.40 11.45 1039.94 1051.39 14.50 10.88 1016.08 1026.96 14.60 10.38 991.80 1002.18 14.70 9.93 964.67 974.60 14.80 9.53 938.56 948.09 14.90 9.17 911.69 920.86 15.00 8.86 886.79 895.65 15.10 8.58 857.59 866.16 15.20 8.32 830.06 838.38 15.30 8.09 800.10 808.19 15.40 7.87 769.80 777.68 15.50 7.68 643.97 651.65 15.60 7.49 698.52 706.01 15.70 7.31 586.25 593.56 15.80 7.15 616.80 623.95 15.90 6.98 552.71 559.69 16.00 6.82 547.94 554.76 16.10 6.66 515.05 521.71 16.20 6.51 489.54 496.04 16.30 6.35 472.29 478.64 16.40 6.20 437.53 443.73 16.50 6.06 426.90 432.96 16.60 5.92 390.52 396.44 16.70 5.79 383.69 389.48 16.80 5.67 352.66 358.33 16.90 5.56 349.15 354.71 17.00 5.45 320.31 325.76 17.10 5.36 316.48 321.84 17.20 5.27 290.17 295.44 17.30 5.19 285.22 290.41 17.40 5.12 261.48 266.60 17.50 5.04 255.92 260.97 17.60 4.98 235.64 240.62 17.70 4.92 231.96 236.88 17.80 4.85 216.90 221.75 17.90 4.80 214.85 219.64 18.00 4.74 203.28 208.02 18.10 4.68 202.06 206.75 18.20 4.62 192.85 197.47 Page 2 Continues on next page... Combine Reach 5 and subs 9 and 10 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 18.30 4.57 191.95 196.52 18.40 4.51 184.37 188.88 18.50 4.45 183.54 187.99 18.60 4.40 177.16 181.56 18.70 4.34 176.28 180.62 18.80 4.28 170.84 175.12 18.90 4.22 169.86 174.08 19.00 4.17 165.14 169.30 19.10 4.11 164.07 168.17 19.20 4.05 159.92 163.97 19.30 3.99 158.76 162.75 19.40 3.93 155.07 159.01 19.50 3.88 153.83 157.71 19.60 3.82 150.51 154.33 19.70 3.76 149.19 152.96 19.80 3.70 146.16 149.86 19.90 3.65 144.77 148.41 20.00 3.59 141.95 145.54 20.10 3.53 140.50 144.03 20.20 3.47 137.88 141.35 20.30 3.42 136.36 139.78 20.40 3.36 133.91 137.28 20.50 3.31 132.37 135.68 20.60 3.26 130.08 133.34 20.70 3.22 128.53 131.75 20.80 3.18 126.38 129.56 20.90 3.14 124.85 128.00 21.00 3.11 122.84 125.95 21.10 3.08 121.35 124.44 21.20 3.06 119.47 122.53 21.30 3.04 118.04 121.08 21.40 3.02 116.31 119.33 21.50 3.00 114.95 117.95 21.60 2.98 113.37 116.35 21.70 2.97 112.10 115.06 21.80 2.96 110.65 113.61 21.90 2.94 109.47 112.41 22.00 2.93 108.17 111.10 22.10 2.92 107.08 110.00 22.20 2.91 105.90 108.81 22.30 2.90 104.90 107.80 22.40 2.89 103.84 106.72 22.50 2.87 102.94 105.81 22.60 2.86 101.98 104.84 22.70 2.85 101.16 104.01 22.80 2.84 100.30 103.14 22.90 2.83 99.56 102.39 23.00 2.82 98.79 101.61 23.10 2.81 98.11 100.92 Page 3 Continues on next page... Combine Reach 5 and subs 9 and 10 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 23.20 2.79 97.42 100.21 23.30 2.78 96.80 99.59 23.40 2.77 96.17 98.94 23.50 2.76 95.60 98.36 23.60 2.75 95.02 97.77 23.70 2.74 94.49 97.23 23.80 2.73 93.96 96.69 23.90 2.71 93.47 96.18 24.00 2.70 92.96 95.67 24.10 2.66 92.50 95.16 24.20 2.59 91.84 94.43 24.30 2.48 91.07 93.55 24.40 2.35 90.11 92.46 24.50 2.19 88.77 90.96 24.60 1.99 87.42 89.42 24.70 1.77 85.77 87.53 24.80 1.51 83.98 85.50 24.90 1.28 81.95 83.23 25.00 1.06 79.73 80.79 25.10 0.87 77.31 78.18 25.20 0.69 74.65 75.34 25.30 0.54 71.84 72.38 25.40 0.40 68.79 69.19 25.50 0.29 65.59 65.88 25.60 0.19 62.26 62.45 25.70 0.11 58.83 58.95 25.80 0.06 55.52 55.58 25.90 0.02 52.13 52.15 26.00 0.00 48.82 48.82 26.10 0.00 45.49 45.49 26.20 0.00 42.34 42.34 26.30 0.00 39.20 39.20 26.40 0.00 36.21 36.21 26.50 0.00 33.29 33.29 26.60 0.00 30.51 30.51 26.70 0.00 27.88 27.88 26.80 0.00 25.38 25.38 26.90 0.00 23.07 23.07 27.00 0.00 20.89 20.89 27.10 0.00 18.88 18.88 27.20 0.00 16.98 16.98 27.30 0.00 15.26 15.26 27.40 0.00 13.65 13.65 27.50 0.00 12.22 12.22 Page 4 .End Hydrograph Report Page 1 English Hyd. No. 28 Reach 6 Hydrograph type = Reach Peak discharge = 1161.85 cfs Storm frequency = 100 yrs Time interval = 6 min Inflow hyd. No. = 27 Section type = Trapezoidal Reach length = 785.0 ft Channel slope = 0.3% Manning's n = 0.400 Bottom width = 25.0 ft Side slope = 2.0:1 Max. depth = 5.0 ft Rating curve x = 0.022 Rating curve m = 1.520 Ave. velocity = 4.18 ft/s Routing coeff. = 1.1860 Modified Att-Kin routing method used. Total Volume = 19,484,820 cuft Hydrograph Discharge Table Time Inflow O utflow (hrs) cfs cfs 9.50 12.25 11.68 9.60 73.90 12.35 9.70 -16.46 85.35 9.90 -18.34 119.99 10.10 -9.41 128.12 10.30 3.51 126.36 10.50 17.71 122.25 10.70 32.30 118.98 10.80 101.93 16.17 10.90 47.23 117.88 11.00 106.17 34.09 11.10 62.85 119.58 11.20 113.08 52.30 11.30 79.65 124.39 11.40 123.32 71.33 11.50 98.69 132.99 11.60 138.06 92.31 11.70 123.97 146.57 11.80 167.70 119.76 11.90 177.21 176.61 12.00 250.76 177.32 12.10 301.20 264.43 12.20 393.07 308.04 12.30 468.57 408.89 12.40 562.82 479.68 12.50 630.03 578.28 12.60 724.32 639.66 12.70 790.99 740.07 12.80 875.85 800.47 12.90 940.91 889.87 13.00 1020.98 950.40 13.10 1082.24 1034.11 Continues on next page... Reach 6 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 13.20 1088.25 1091.19 13.30 1107.93 1087.71 13.40 1143.55 1111.70 13.50 1137.73 1149.47 13.60 1157.72 << 1135.54 13.70 1140.36 1161.85 << 13.80 1145.06 1136.36 13.90 1126.85 1146.68 14.00 1121.88 1123.16 14.10 1103.00 1121.64 14.20 1090.58 1099.54 14.30 1070.17 1088.92 14.40 1051.39 1066.68 14.50 1026.96 1048.55 14.60 1002.18 1022.94 14.70 974.60 998.32 14.80 948.09 970.18 14.90 920.86 943.98 15.00 895.65 916.56 15.10 866.16 891.76 15.20 838.38 861.40 15.30 808.19 834.10 15.40 777.68 803.37 15.50 651.65 772.90 15.60 706.01 629.10 15.70 593.56 720.31 15.80 623.95 569.99 15.90 559.69 633.98 16.00 554.76 545.87 16.10 521.71 556.41 16.20 496.04 515.25 16.30 478.64 492.47 16.40 443.73 476.07 16.50 432.96 437.72 16.60 396.44 432.08 16.70 389.48 389.81 16.80 358.33 389.42 16.90 354.71 352.54 17.00 325.76 355.11 17.10 321.84 320.30 17.20 295.44 322.13 17.30 290.41 290.48 17.40 266.60 290.39 17.50 260.97 262.17 17.60 240.62 260.74 17.70 236.88 236.88 17.80 221.75 236.88 17.90 219.64 218.94 18.00 208.02 219.77 Page 2 Continues on next page... Reach 6 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 18.10 206.75 205.83 18.20 197.47 206.92 18.30 196.52 195.71 18.40 188.88 196.67 18.50 187.99 187.43 18.60 181.56 188.10 18.70 180.62 180.34 18.80 175.12 180.67 18.90 174.08 174.09 19.00 169.30 174.08 19.10 168.17 168.42 19.20 163.97 168.13 19.30 162.75 163.19 19.40 159.01 162.67 19.50 157.71 158.33 19.60 154.33 157.60 19.70 152.96 153.72 19.80 149.86 152.81 19.90 148.41 149.31 20.00 145.54 148.24 20.10 144.03 145.04 20.20 141.35 143.84 20.30 139.78 140.89 20.40 137.28 139.57 20.50 135.68 136.85 20.60 133.34 135.47 20.70 131.75 132.94 20.80 129.56 131.53 20.90 128.00 129.19 21.00 125.95 127.77 21.10 124.44 125.61 21.20 122.53 124.22 21.30 121.08 122.22 21.40 119.33 120.87 21.50 117.95 119.04 21.60 116.35 117.75 21.70 115.06 116.09 21.80 113.61 114.87 21.90 112.41 113.37 22.00 111.10 112.24 22.10 110.00 110.88 22.20 108.81 109.83 22.30 107.80 108.62 22.40 106.72 107.65 22.50 105.81 106.55 22.60 104.84 105.67 22.70 104.01 104.69 22.80 103.14 103.89 22.90 102.39 103.00 Page 3 Continues on next page... Reach 6 Hydrograph Discharge Table Time Inflow Outflow (hrs) cfs cfs 23.00 101.61 102.28 23.10 100.92 101.48 23.20 100.21 100.82 23.30 99.59 100.10 23.40 98.94 99.49 23.50 98.36 98.84 23.60 97.77 98.27 23.70 97.23 97.68 23.80 96.69 97.15 23.90 96.18 96.60 24.00 95.67 96.10 24.10 95.16 95.58 24.20 94.43 95.08 24.30 93.55 94.31 24.40 92.46 93.41 24.50 90.96 92.28 24.60 89.42 90.71 24.70 87.53 89.17 24.80 85.50 87.23 24.90 83.23 85.17 25.00 80.79 82.87 25.10 78.18 80.41 25.20 75.34 77.76 25.30 72.38 74.89 25.40 69.19 71.91 25.50 65.88 68.69 25.60 62.45 65.35 25.70 58.95 61.92 25.80 55.58 58.40 25.90 52.15 55.05 26.00 48.82 51.61 26.10 45.49 48.30 26.20 42.34 44.96 26.30 39.20 41.85 26.40 36.21 38.71 26.50 33.29 35.74 26.60 30.51 32.83 26.70 27.88 30.08 26.80 25.38 27.47 26.90 23.07 24.99 27.00 20.89 22.71 27.10 18.88 20.55 27.20 16.98 18.57 27.30 15.26 16.69 27.40 13.65 14.99 27.50 12.22 13.40 27.60 10.91 12.00 Page 4 .End Hydrograph Report Page 1 English Hyd. No. 29 Subbasin 11 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 14.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 49.29 cfs Time interval = 6 min Curve number = 75 Hydraulic length = 0 ft Time of conc. (Tc) = 75.6 min Distribution = Type II Shape factor = 484 Total Volume = 390,853 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7.50 0.51 10.70 2.79 13.90 10.69 17.10 3.26 7.60 0.54 10.80 2.97 14.00 9.15 17.20 3.21 7.70 0.58 10.90 3.18 14.10 8.45 17.30 3.16 7.80 0.61 11.00 3.41 14.20 7.87 17.40 3.11 7.90 0.65 11.10 3.65 14.30 7.38 17.50 3.07 8.00 0.68 11.20 3.94 14.40 6.97 17.60 3.03 8.10 0.72 11.30 4.27 14.50 6.62 17.70 2.99 8.20 0.75 11.40 4.65 14.60 6.32 17.80 2.96 8.30 0.79 11.50 5.09 14.70 6.04 17.90 2.92 8.40 0.83 11.60 5.75 14.80 5.80 18.00 2.88 8.50 0.87 11.70 6.93 14.90 5.58 18.10 2.85 8.60 0.92 11.80 9.09 15.00 5.39 18.20 2.81 8.70 0.97 11.90 13.22 15.10 5.22 18.30 2.78 8.80 1.02 12.00 18.72 15.20 5.07 18.40 2.75 8.90 1.08 12.10 24.38 15.30 4.92 18.50 2.71 9.00 1.15 12.20 30.14 15.40 4.79 18.60 2.68 9.10 1.22 12.30 35.93 15.50 4.67 18.70 2.64 9.20 1.29 12.40 41.44 15.60 4.56 18.80 2.61 9.30 1.37 12.50 46.15 15.70 4.45 18.90 2.57 9.40 1.44 12.60 49.29 << 15.80 4.35 19.00 2.54 9.50 1.52 12.70 49.24 15.90 4.25 19.10 2.50 9.60 1.60 12.80 46.90 16.00 4.15 19.20 2.47 9.70 1.68 12.90 44.22 16.10 4.06 19.30 2.43 9.80 1.76 13.00 41.25 16.20 3.96 19.40 2.39 9.90 1.84 13.10 38.05 16.30 3.87 19.50 2.36 10.00 1.93 13.20 34.66 16.40 3.78 19.60 2.32 10.10 2.02 13.30 31.16 16.50 3.69 19.70 2.29 10.20 2.12 13.40 27.59 16.60 3.60 19.80 2.25 10.30 2.22 13.50 23.96 16.70. 3.52 19.90 2.22 10.40 2.34 13.60 20.30 16.80 3.45 20.00 2.18 10.50 2.48 13.70 16.72 16.90 3.38 20.10 2.15 10.60 2.62 13.80 13.42 17.00 3.32 20.20 2.11 Continues on next page... Subbasin 11 Hydrograph Discharge Table Time Outflow (hrs cfs) 20.30 2.08 20.40 2.05 20.50 2.02 20.60 1.99 20.70 1.96 20.80 1.94 20.90 1.91 21.00 1.89 21.10 1.88 21.20 1.86 21.30 1.85 21.40 1.84 21.50 1.82 21.60 1.82 21.70 1.81 21.80 1.80 21.90 1.79 22.00 1.78 22.10 1.78 22.20 1.77 22.30 1.76 22.40 1.76 22.50 1.75 22.60 1.74 22.70 1.74 22.80 1.73 22.90 1.72 23.00 1.72 23.10 1.71 23.20 1.70 23.30 1.69 23.40 1.69 23.50 1.68 23.60 1.67 23.70 1.67 23.80 1.66 23.90 1.65 24.00 1.65 24.10 1.62 24.20 1.58 24.30 1.51 24.40 1.43 24.50 1.33 24.60 1.21 24.70 1.08 24.80 0.92 24.90 0.78 25.00 0.65 25.10 0.53 Time Outflow (hrs cfs) End Page 2 TR55 Tc Worksheet Page 1 Hyd. No. 29 Subbasin 11 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.240 Flow length = 296.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 65.9 min Shallow Concentrated Flow Flow length = 1300 ft Watercourse slope = 1.9 % Surface description = Unpaved Average velocity = 2.22 ft/s Travel Time = 9.7 min Channel Flow Cross section flow area = 0.0 sqft Wetted perimeter = 0.0 ft Channel slope = 0.0 % Manning's n-value = 0.015 Velocity = 0.00 ft/s Flow length = 0.0 ft Travel Time = min Total Travel Time, Tc = 75.6 min Hydrograph Report Page 1 English Hyd. No. 30 Subasin 12 Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 12.00 ac = 0.0% = TR55 = 11.00 in = 24 hrs Peak discharge = 52.18 cfs Time interval = 6 min Curve number = 75 Hydraulic length = 0 ft Time of conc. (Tc) = 56 min Distribution = Type II Shape factor = 484 Total Volume = 340,335 cuft Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 7.60 0.54 10.80 2.95 14.00 6.49 17.20 2.69 7.70 0.57 10.90 3.17 14.10 6.15 17.30 2.65 7.80 0.60 11.00 3.42 14.20 5.84 17.40 2.62 7.90 0.63 11.10 3.69 14.30 5.56 17.50 2.59 8.00 0.66 11.20 3.99 14.40 5.31 17.60 2.56 8.10 0.70 11.30 4.35 14.50 5.09 17.70 2.53 8.20 0.73 11.40 4.77 14.60 4.89 17.80 2.50 8.30 0.76 11.50 5.25 14.70 4.72 17.90 2.47 8.40 0.80 11.60 6.06 14.80 4.57 18.00 2.44 8.50 0.84 11.70 7.67 14.90 4.43 18.10 2.41 8.60 0.89 11.80 10.71 15.00 4.31 18.20 2.38 8.70 0.94 11.90 16.68 15.10 4.21 18.30 2.35 8.80 1.00 12.00 24.71 15.20 4.11 18.40 2.32 8.90 1.06 12.10 32.91 15.30 4.01 18.50 2.29 9.00 1.13 12.20 40.82 15.40 3.93 18.60 2.26 9.10 1.20 12.30 47.63 15.50 3.84 18.70 2.23 9.20 1.27 12.40 52.18 << 15.60 3.76 18.80 2.20 9.30 1.35 12.50 51.99 15.70 3.67 18.90 2.17 9.40 1.42 12.60 48.38 15.80 3.59 19.00 2.14 9.50 1.49 12.70 44.29 15.90 3.50 19.10 2.11 9.60 1.56 12.80 39.82 16.00 3.42 19.20 2.08 9.70 1.63 12.90 35.04 16.10 3.34 19.30 2.04 9.80 1.70 13.00 30.05 16.20 3.25 19.40 2.01 9.90 1.77 13.10 24.95 16.30 3.17 19.50 1.98 10.00 1.85 13.20 19.93 16.40 3.10 19.60 1.95 10.10 1.93 13.30 15.30 16.50 3.03 19.70 1.92 10.20 2.03 13.40 11.48 16.60 2.96 19.80 1.89 10.30 2.14 13.50 9.40 16.70 2.90 19.90 1.86 10.40 2.27 13.60 8.57 16.80 2.85 20.00 1.83 10.50 2.41 13.70 7.89 16.90 2.80 20.10 1.80 10.60 2.57 13.80 7.33 17.00 2.76 20.20 1.77 10.70 2.75 13.90 6.88 17.10 2.72 20.30 1.74 Continues on next page... Subasin 12 Hydrograph Discharge Table Time Outflow (hrs cfs) 20.40 1.71 20.50 1.69 20.60 1.67 20.70 1.65 20.80 1.63 20.90 1.62 21.00 1.61 21.10 1.60 21.20 1.59 21.30 1.58 21.40 1.58 21.50 1.57 21.60 1.56 21.70 1.56 21.80 1.55 21.90 1.55 22.00 1.54 22.10 1.53 22.20 1.53 22.30 1.52 22.40 1.52 22.50 1.51 22.60 1.50 22.70 1.50 22.80 1.49 22.90 1.49 23.00 1.48 23.10 1.47 23.20 1.47 23.30 1.46 23.40 1.46 23.50 1.45 23.60 1.44 23.70 1.44 23.80 1.43 23.90 1.42 24.00 1.42 24.10 1.38 24.20 1.32 24.30 1.23 24.40 1.11 24.50 0.96 24.60 0.79 24.70 0.63 Page 2 End TR55 Tc Worksheet Hyd. No. 30 Subasin 12 Storm frequency = 100 yrs Sheet Flow Manning's n-value = 0.240 Flow length = 197.0 ft Two-year 24-hr precip. = 4.50 in Land slope = 0.3 % Travel Time = 47.6 min Shallow Concentrated Flow Flow length = 1000 ft Watercourse slope = 1.5 % Surface description = Unpaved Average velocity = 1.98 ft/s Travel Time = 8.4 min Channel Flow Cross section flow area Wetted perimeter Channel slope Manning's n-value Velocity Flow length = 0.0 sqft = 0.0 ft =0.0% = 0.015 = 0.00 ft/s = 0.0 ft Travel Time = min Page 1 Total Travel Time, Tc = 56.0 min Hydrograph Report Page 1 English Hyd. No. 31 Combine subs 11 and 12 Hydrograph type = Combine Peak discharge = 98.14 cfs Storm frequency = 100 yrs Time interval = 6 min 1 st inflow hyd. No.= 29 2nd inflow hyd. No: 30 Total Volume = 731,188 cult Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 7.50 0.51 0.51 1.02 7.60 0.54 0.54 1.09 7.70 0.58 0.57 1.15 7.80 0.61 0.60 1.21 7.90 0.65 0.63 1.28 8.00 0.68 0.66 1.34 8.10 0.72 0.70 1.41 8.20 0.75 0.73 1.48 8.30 0.79 0.76 1.55 8.40 0.83 0.80 1.63 8.50 0.87 0.84 1.72 8.60 0.92 0.89 1.81 8.70 0.97 0.94 1.91 8.80 1.02 1.00 2.02 8.90 1.08 1.06 2.14 9.00 1.15 1.13 2.27 9.10 1.22 1.20 2.42 9.20 1.29 1.27 2.56 9.30 1.37 1.35 2.71 9.40 1.44 1.42 2.87 9.50 1.52 1.49 3.02 9.60 1.60 1.56 3.16 9.70 1.68 1.63 3.31 9.80 1.76 1.70 3.46 9.90 1.84 1.77 3.61 10.00 1.93 1.85 3.78 10.10 2.02 1.93 3.95 10.20 2.12 2.03 4.15 10.30 2.22 2.14 4.37 10.40 2.34 2.27 4.61 10.50 2.48 2.41 4.88 10.60 2.62 2.57 5.19 10.70 2.79 2.75 5.53 10.80 2.97 2.95 5.92 10.90 3.18 3.17 6.35 11.00 3.41 3.42 6.83 Continues on next page... Combine subs 11 and 12 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 11.10 3.65 3.69 7.34 11.20 3.94 3.99 7.93 11.30 4.27 4.35 8.62 11.40 4.65 4.77 9.41 11.50 5.09 5.25 10.34 11.60 5.75 6.06 11.80 11.70 6.93 7.67 14.60 11.80 9.09 10.71 19.79 11.90 13.22 16.68 29.90 12.00 18.72 24.71 43.43 12.10 24.38 32.91 57.29 12.20 30.14 40.82 70.96 12.30 35.93 47.63 83.56 12.40 41.44 52.18 << 93.63 12.50 46.15 51.99 98.14 << 12.60 49.29 << 48.38 97.67 12.70 49.24 44.29 93.53 12.80 46.90 39.82 86.72 12.90 44.22 35.04 79.26 13.00 41.25 30.05 71.30 13.10 38.05 24.95 62.99 13.20 34.66 19.93 54.59 13.30 31.16 15.30 46.46 13.40 27.59 11.48 39.07 13.50 23.96 9.40 33.36 13.60 20.30 8.57 28.87 13.70 16.72 7.89 24.61 13.80 13.42 7.33 20.76 13.90 10.69 6.88 17.57 14.00 9.15 6.49 15.64 14.10 8.45 6.15 14.60 14.20 7.87 5.84 13.71 14.30 7.38 5.56 12.94 14.40 6.97 5.31 12.28 14.50 6.62 5.09 11.71 14.60 6.32 4.89 11.21 14.70 6.04 4.72 10.76 14.80 5.80 4.57 10.37 14.90 5.58 4.43 10.02 15.00 5.39 4.31 9.71 15.10 5.22 4.21 9.43 15.20 5.07 4.11 9.17 15.30 4.92 4.01 8.94 15.40 4.79 3.93 8.72 15.50 4.67 3.84 8.51 15.60 4.56 3.76 8.32 15.70 4.45 3.67 8.13 15.80 4.35 3.59 7.94 15.90 4.25 3.50 7.75 Page 2 Continues on next page... Combine subs 11 and 12 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 16.00 4.15 3.42 7.57 16.10 4.06 3.34 7.39 16.20 3.96 3.25 7.21 16.30 3.87 3.17 7.04 16.40 3.78 3.10 6.87 16.50 3.69 3.03 6.71 16.60 3.60 2.96 6.56 16.70 3.52 2.90 6.43 16.80 3.45 2.85 6.30 16.90 3.38 2.80 6.19 17.00 3.32 2.76 6.08 17.10 3.26 2.72 5.99 17.20 3.21 2.69 5.90 17.30 3.16 2.65 5.81 17.40 3.11 2.62 5.74 17.50 3.07 2.59 5.66 17.60 3.03 2.56 5.59 17.70 2.99 2.53 5.52 17.80 2.96 2.50 5.46 17.90 2.92 2.47 5.39 18.00 2.88 2.44 5.33 18.10 2.85 2.41 5.26 18.20 2.81 2.38 5.20 18.30 2.78 2.35 5.13 18.40 2.75 2.32 5.06 18.50 2.71 2.29 5.00 18.60 2.68 2.26 4.93 18.70 2.64 2.23 4.87 18.80 2.61 2.20 4.80 18.90 2.57 2.17 4.74 19.00 2.54 2.14 4.67 19.10 2.50 2.11 4.61 19.20 2.47 2.08 4.54 19.30 2.43 2.04 4.47 19.40 2.39 2.01 4.41 19.50 2.36 1.98 4.34 19.60 2.32 1.95 4.28 19.70 2.29 1.92 4.21 19.80 2.25 1.89 4.15 19.90 2.22 1.86 4.08 20.00 2.18 1.83 4.01 20.10 2.15 1.80 3.95 20.20 2.11 1.77 3.88 20.30 2.08 1.74 3.82 20.40 2.05 1.71 3.76 20.50 2.02 1.69 3.71 20.60 1.99 1.67 3.66 20.70 1.96 1.65 3.61 20.80 1.94 1.63 3.57 Page 3 Continues on next page... Combine subs 11 and 12 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 20.90 1.91 1.62 3.53 21.00 1.89 1.61 3.50 21.10 1.88 1.60 3.48 21.20 1.86 1.59 3.45 21.30 1.85 1.58 3.43 21.40 1.84 1.58 3.41 21.50 1.82 1.57 3.39 21.60 1.82 1.56 3.38 21.70 1.81 1.56 3.36 21.80 1.80 1.55 3.35 21.90 1.79 1.55 3.34 22.00 1.78 1.54 3.32 22.10 1.78 1.53 3.31 22.20 1.77 1.53 3.30 22.30 1.76 1.52 3.29 22.40 1.76 1.52 3.27 22.50 1.75 1.51 3.26 22.60 1.74 1.50 3.25 22.70 1.74 1.50 3.23 22.80 1.73 1.49 3.22 22.90 1.72 1.49 3.21 23.00 1.72 1.48 3.19 23.10 1.71 1.47 3.18 23.20 1.70 1.47 3.17 23.30 1.69 1.46 3.16 23.40 1.69 1.46 3.14 23.50 1.68 1.45 3.13 23.60 1.67 1.44 3.12 23.70 1.67 1.44 3.10 23.80 1.66 1.43 3.09 23.90 1.65 1.42 3.08 24.00 1.65 1.42 3.06 24.10 1.62 1.38 3.00 24.20 1.58 1.32 2.90 24.30 1.51 1.23 2.74 24.40 1.43 1.11 2.54 24.50 1.33 0.96 2.29 24.60 1.21 0.79 2.00 24.70 1.08 0.63 1.70 24.80 0.92 0.49 1.41 24.90 0.78 0.36 1.14 Page 4 End Hydrograph Report Page 1 English Hyd. No. 32 Conbine subs 11 and 12 and Reach 6 Hydrograph type = Combine Storm frequency = 100 yrs 1st inflow hyd. No.= 28 Peak discharge = 1186.46 cfs Time interval = 6 min 2nd inflow hyd. No: 31 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 9.20 9.81 2.56 12.37 9.30 10.41 2.71 13.12 9.40 11.03 2.87 13.90 9.50 11.68 3.02 14.70 9.60 12.35 3.16 15.52 9.70 85.35 3.31 88.66 9.90 119.99 3.61 123.60 10.10 128.12 3.95 132.07 10.30 126.36 4.37 130.73 10.50 122.25 4.88 127.14 10.70 118.98 5.53 124.51 10.80 16.17 5.92 22.09 10.90 117.88 6.35 124.22 11.00 34.09 6.83 40.92 11.10 119.58 7.34 126.92 11.20 52.30 7.93 60.23 11.30 124.39 8.62 133.00 11.40 71.33 9.41 80.75 11.50 132.99 10.34 143.33 11.60 92.31 11.80 104.11 11.70 146.57 14.60 161.17 11.80 119.76 19.79 139.56 11.90 176.61 29.90 206.51 12.00 177.32 43.43 220.75 12.10 264.43 57.29 321.72 12.20 308.04 70.96 378.99 12.30 408.89 83.56 492.44 12.40 479.68 93.63 573.30 12.50 578.28 98.14 << 676.42 12.60 639.66 97.67 737.33 12.70 740.07 93.53 833.60 12.80 800.47 86.72 887.18 12.90 889.87 79.26 969.13 13.00 950.40 71.30 1021.70 13.10 1034.11 62.99 1097.10 13.20 1091.19 54.59 1145.78 Total Volume = 20,216,010 cuft Continues on next page... Conbine subs 11 and 12 and Reach 6 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 13.30 1087.71 46.46 1134.16 13.40 1111.70 39.07 1150.76 13.50 1149.47 33.36 1182.84 13.60 1135.54 28.87 1164.41 13.70 1161.85 << 24.61 1186.46 << 13.80 1136.36 20.76 1157.12 13.90 1146.68 17.57 1164.25 14.00 1123.16 15.64 1138.80 14.10 1121.64 14.60 1136.24 14.20 1099.54 13.71 1113.25 14.30 1088.92 12.94 1101.86 14.40 1066.68 12.28 1078.96 14.50 1048.55 11.71 1060.26 14.60 1022.94 11.21 1034.15 14.70 998.32 10.76 1009.08 14.80 970.18 10.37 980.55 14.90 943.98 10.02 954.00 15.00 916.56 9.71 926.27 15.10 891.76 9.43 901.19 15.20 861.40 9.17 870.57 15.30 834.10 8.94 843.03 15.40 803.37 8.72 812.09 15.50 772.90 8.51 781.41 15.60 629.10 8.32 637.41 15.70 720.31 8.13 728.44 15.80 569.99 7.94 577.93 15.90 633.98 7.75 641.74 16.00 545.87 7.57 553.44 16.10 556.41 7.39 563.80 16.20 515.25 7.21 522.47 16.30 492.47 7.04 499.51 16.40 476.07 6.87 482.94 16.50 437.72 6.71 444.43 16.60 432.08 6.56 438.64 16.70 389.81 6.43 396.23 16.80 389.42 6.30 395.73 16.90 352.54 6.19 358.73 17.00 355.11 6.08 361.20 17.10 320.30 5.99 326.29 17.20 322.13 5.90 328.02 17.30 290.48 5.81 296.30 17.40 290.39 5.74 296.13 17.50 262.17 5.66 267.83 17.60 260.74 5.59 266.34 17.70 236.88 5.52 242.40 17.80 236.88 5.46 242.33 17.90 218.94 5.39 224.33 18.00 219.77 5.33 225.10 18.10 205.83 5.26 211.09 Page 2 Continues on next page... Conbine subs 11 and 12 and Reach 6 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 18.20 206.92 5.20 212.11 18.30 195.71 5.13 200.84 18.40 196.67 5.06 201.74 18.50 187.43 5.00 192.43 18.60 188.10 4.93 193.03 18.70 180.34 4.87 185.21 18.80 180.67 4.80 185.47 18.90 174.09 4.74 178.82 19.00 174.08 4.67 178.75 19.10 168.42 4.61 173.02 19.20 168.13 4.54 172.67 19.30 163.19 4.47 167.67 19.40 162.67 4.41 167.08 19.50 158.33 4.34 162.67 19.60 157.60 4.28 161.87 19.70 153.72 4.21 157.93 19.80 152.81 4.15 156.96 19.90 149.31 4.08 153.39 20.00 148.24 4.01 152.26 20.10 145.04 3.95 148.99 20.20 143.84 3.88 147.72 20.30 140.89 3.82 144.71 20.40 139.57 3.76 143.33 20.50 136.85 3.71 140.56 20.60 135.47 3.66 139.12 20.70 132.94 3.61 136.55 20.80 131.53 3.57 135.10 20.90 129.19 3.53 132.73 21.00 127.77 3.50 131.28 21.10 125.61 3.48 129.09 21.20 124.22 3.45 127.67 21.30 122.22 3.43 125.65 21.40 120.87 3.41 124.28 21.50 119.04 3.39 122.43 21.60 117.75 3.38 121.13 21.70 116.09 3.36 119.45 21.80 114.87 3.35 118.22 21.90 113.37 3.34 116.71 22.00 112.24 3.32 115.56 22.10 110.88 3.31 114.20 22.20 109.83 3.30 113.13 22.30 108.62 3.29 111.90 22.40 107.65 3.27 110.92 22.50 106.55 3.26 109.81 22.60 105.67 3.25 108.92 22.70 104.69 3.23 107.92 22.80 103.89 3.22 107.11 22.90 103.00 3.21 106.21 23.00 102.28 3.19 105.47 Page 3 Continues on next page... Conbine subs 11 and 12 and Reach 6 Hydrograph Discharge Table Time 1st Inflow + 2nd Inflow = Outflow (hrs) cfs cfs cfs 23.10 101.48 3.18 104.67 23.20 100.82 3.17 103.98 23.30 100.10 3.16 103.25 23.40 99.49 3.14 102.63 23.50 98.84 3.13 101.97 23.60 98.27 3.12 101.39 23.70 97.68 3.10 100.78 23.80 97.15 3.09 100.24 23.90 96.60 3.08 99.68 24.00 96.10 3.06 99.17 24.10 95.58 3.00 98.59 24.20 95.08 2.90 97.98 24.30 94.31 2.74 97.05 24.40 93.41 2.54 95.95 24.50 92.28 2.29 94.58 24.60 90.71 2.00 92.71 24.70 89.17 1.70 90.88 24.80 87.23 1.41 88.64 24.90 85.17 1.14 86.32 25.00 82.87 0.91 83.78 25.10 80.41 0.70 81.11 25.20 77.76 0.53 78.29 25.30 74.89 0.38 75.27 25.40 71.91 0.26 72.18 25.50 68.69 0.18 68.86 25.60 65.35 0.12 65.47 25.70 61.92 0.07 61.99 25.80 58.40 0.03 58.43 25.90 55.05 0.01 55.07 26.00 51.61 0.00 51.61 26.10 48.30 0.00 48.30 26.20 44.96 0.00 44.96 26.30 41.85 0.00 41.85 26.40 38.71 0.00 38.71 26.50 35.74 0.00 35.74 26.60 32.83 0.00 32.83 26.70 30.08 0.00 30.08 26.80 27.47 0.00 27.47 26.90 24.99 0.00 24.99 27.00 22.71 0.00 22.71 27.10 20.55 0.00 20.55 27.20 18.57 0.00 18.57 27.30 16.69 0.00 16.69 27.40 14.99 0.00 14.99 27.50 13.40 0.00 13.40 27.60 12.00 0.00 12.00 Page 4 End JOe 0- . 1nC. Survivors & b,,ginee s 2167 P3 ,st soak Circle College Statism, 'Iexas 77845 (979) 690-3378 2`1 Addendum to the Drainage Report for Royder Ridge Brazos County, Texas Prepared by David R. Mayo, P.E. fo r BCS Development Company 41121Iighway 6 South Colle e Station, Texas 77845 September 17, 2001 Joe Orr, Inc. Surveyors & Engineers 2167 Post Oak Circle College Station, Texas 77845 (979) 690-3378 2°d Addendum to the Drainage Report for Royder Ridge Brazos County, Texas Prepared by David R. Mayo, P.E. for BCS Development Company 4112 Highway 6 South College Station, Texas 77845 September 17, 2001 god ADDENDUM To Royder Ridge Drainage Report The purpose of this report is to update the drainage analysis of the eastern portion of the Royder Ridge Subdivision. The first addendum to the Royder Ridge drainage report addresses the culvert under Greens Prairie Trail just west of Royder Road. This culvert was described as a 21" CMP with a drainage area of 13.3 acres. The final design of this area has resulted in a division of the drainage area into several sub-areas due to the construction of a concrete paved alley and fill being placed in the low areas. The culvert existing under Greens Prairie Trail is actually a 24" CMP instead of a 21 The drainage area for this culvert has been reduced to 4.4 acres. The existing 18" CMP culvert under Royder road had been changed to a 36" CMP. Two sub-areas will drain into this pipe as well as overflow from the 24" CMP under Greens Prairie Trail. The full flow of the 24" CMP under Greens Prairie Trail will accommodate the 25 year design, but before this elevation is reached, the flow will continue down the drainage ditch to Royder Road. This will then flow northward along the ditch on the west side of Royder Road to the 36" CMP that has replaced the original 18" CMP under Royder Road. This culvert can accommodate the 100 year flow from the the three sub-areas D6, D7 and D8 as shown on the following drainage map. A new 18" CMP culvert has been installed across Royder Road upstream of the alley and will carry the 100-year flow from the 3.1 acre area D5. Calculations were performed using the Culvert Master program by Haestad Methods, IN, and are included in this report. Keren Eidson 124.8 Acres 300/609 (Not Platted) Exst. 2-88I CMP Culvert Area D3 4 rI ra .1 A Y 4 es Led ton Trail roo 2 4 ed fi A le T ei. 4 iD c ~ Min. Fl fl..r .,D 5 00 .1 Ac . Min. I.v, _ MI 297.5 re Ac r, Exst. 24 CMP Culvert Proposed 36" CMP Culvert ' o VRV Partners 255.13 Acres 1175/653 (Not Platted) o, 'Prop. 1T CMP Culvert Exst. 18" CMP Culvert Prop., 36" CMP Culvert ~-Exst. 2,V CMP Culvert BCS Development Co. I 46.03 Acres VRV Partners 3950/83 255.13 Acres 1175/653 (Not Platted) Y - 2W latted Contour IntwyoI - V Not Platted) Estates of Royder Ridge Drainage Map Greens Prairie Trail - Royder Road Area Culvert Designer/Analyzer Report 24" Under Greens Prairie Trail Analysis Component Storm Event Design Discharge 10.96 cfs Peak Discharge Method: Rational Design Return Period 25 year Check Return Period 100 year Design Peak Discharge 10.96 cfs Check Peak Discharge 12.95 cfs Total Area 4.40 acres Time of Concentration 15.00 min Weighted C 0.30 Intensity 9.73 in/hr Area Subwatershed (acres) C 1 4.40 0.30 Tailwater Conditions: Constant Tailwater Tailwater Elevation N/A ft Name Description Discharge HW Elev Velocity Culvert-1 1-24 inch Circular 10.96 cfs 297.30 ft 5.64 ft/s Weir Not Considered N/A N/A N/A Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:26:16 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 2 Culvert Designer/Analyzer Report 24" Under Greens Prairie Trail Component: Culvert-1 Culvert Summary Computed Headwater Elevation Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/ Height 297.30 ft 297.08 ft 297.30 ft 1.03 Discharge Tailwater Elevation Control Type 10.96 cfs N/A ft Outlet Control Grades Upstream Invert Length 295.25 ft 44.00 ft Downstream Invert Constructed Slope 295.00 ft 0.005682 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcritical 5.64 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 1.19 ft N/A ft 1.19 ft 0.018320 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 24 inch 1 Mannings Coefficient Span Rise 0.024 2.00 ft 2.00 ft Outlet Control Properties Outlet Control HW Elev Ke 297.30 ft 0.70 Upstream Velocity Head Entrance Loss 0.25 ft 0.17 ft Inlet Control Properties Inlet Control HW Elev Inlet Type K M C Y 297.08 ft Mitered to slope 0.02100 1.33000 0.04630 0.75000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 3.1 ftz 2 2 1 Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09113/01 09:26:16 AM © Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 2 of 2 Culvert Designer/Analyzer Report 24" Under Greens Prairie Trail Analysis Component Storm Event Check Discharge 12.95 cfs Peak Discharge Method: Rational Design Return Period 25 year Check Return Period 100 year Design Peak Discharge 10.96 cfs Check Peak Discharge 12.95 cfs Total Area 4.40 acres Time of Concentration 15.00 min Weighted C 0.30 Intensity 9.73 in/hr Area Subwatershed (acres) C 1 4.40 0.30 Tailwater Conditions: Constant Tailwater Tailwater Elevation N/A ft Name Description Discharge HW Elev Velocity Culvert-1 1-24 inch Circular 12.95 cfs 297.56 ft 6.02 ft/s Weir Not Considered N/A N/A N/A Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:29:40 AM ® Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 2 Culvert Designer/Analyzer Report 24" Under Greens Prairie Trail Component: Culvert-1 Culvert Summary Computed Headwater Elevation Inlet Control HW Elev outlet Control HW Elev Headwater Depth/ Height 297.56 ft 297.29 ft 297.56 ft 1.16 Discharge Tailwater Elevation Control Type 12.95 cfs N/A ft Outlet Control Grades Upstream Invert Length 295.25 ft 44.00 ft Downstream Invert Constructed Slope 295.00 ft 0.005682 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcritical 6.02 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 1.29 ft N/A ft 1.29 ft 0.019741 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 24 inch 1 Mannings Coefficient Span Rise 0.024 2.00 ft 2.00 ft Outlet Control Properties Outlet Control HW Elev Ke 297.56 ft 0.70 Upstream Velocity Head Entrance Loss 0.29 ft 0.20 ft Inlet Control Properties Inlet Control HW Elev Inlet Type K M C Y 297.29 ft Mitered to slope 0.02100 1.33000 0.04630 0.75000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 3.1 ft2 2 2 1 Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:29:40 AM © Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 2 of 2 Culvert Designer/Analyzer Report 36" Under Royder south of Alley Analysis Component Storm Event Design Discharge 33.86 cfs Peak Discharge Method: Rational Design Return Period 25 year Check Return Period 100 year Design Peak Discharge 33.86 cfs Check Peak Discharge 40.02 cfs Total Area 13.60 acres Time of Concentration 15.00 min Weighted C 0.30 Intensity 9.73 in/hr Area Subwatershed (acres) C 1 3.10 0.30 2 4.20 0.30 3 1.90 0.30 4 4.40 0.30 Tailwater Conditions: Constant Tailwater Tailwater Elevation N/A ft Name Description Discharge HW Elev Velocity Culvert-2 1-36 inch Circular 33.86 cfs 295.81 ft 7.22 ft/s Weir Not Considered N/A N/A N/A Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:33:59 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 2 Culvert Designer/Analyzer Report 36" Under Royder south of Alley Component:Culvert-2 Culvert Summary Computed Headwater Elevation inlet Control HW Elev Outlet Control HW Elev Headwater Depth/ Height 295.81 ft 295.66 ft 295.81 ft 1.10 Discharge Tailwater Elevation Control Type 33.86 cfs N/A ft Outlet Control Grades Upstream Invert Length 292.50 ft 40.00 ft Downstream Invert Constructed Slope 292.20 ft 0.007500 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcritical 7.22 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 1.89 ft N/A ft 1.89 ft 0.016816 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 36 inch 1 Mannings Coefficient Span Rise 0.024 3.00 ft 3.00 ft Outlet Control Properties Outlet Control HW Elev Ke 295.81 ft 0.90 Upstream Velocity Head Entrance Loss 0.50 ft 0.45 ft Inlet Control Properties Inlet Control HW Elev Inlet Type K M C Y 295.66 ft Projecting 0.03400 1.50000 0.05530 0.54000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 7.1 ft2 2 3 1 Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:33:59 AM ® Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 2 of 2 Culvert Designer/Analyzer Report 36" Under Royder south of Alley Analysis Component Storm Event Check Discharge 40.02 cfs Peak Discharge Method: Rational Design Return Period 25 year Check Return Period 100 year Design Peak Discharge 33.86 cfs Check Peak Discharge 40.02 cfs Total Area 13.60 acres Time of Concentration 15.00 min Weighted C 0.30 Intensity 9.73 in/hr Area Subwatershed (acres) C 1 3.10 0.30 2 4.20 0.30 3 1.90 0.30 4 4.40 0.30 Tailwater Conditions: Constant Tailwater Tailwater Elevation N/A ft Name Description Discharge HW Elev Velocity Culvert-2 1-36 inch Circular 40.02 cfs 296.22 ft 7.73 ft/s Weir Not Considered N/A N/A N/A Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:33:40 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 2 Culvert Designer/Analyzer Report 36" Under Royder south of Alley Component: Culvert-2 Culvert Summary Computed Headwater Elevation Inlet Control HW Elev Outlet Control HW Elev Headwater Depth/ Height 296.22 ft 296.08 ft 296.22 ft 1.24 Discharge Tailwater Elevation Control Type 40.02 cfs N/A ft Outlet Control Grades Upstream Invert Length 292.50 ft 40.00 ft Downstream Invert Constructed Slope 292.20 ft 0.007500 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcritical 7.73 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 2.06 ft N/A ft 2.06 ft 0.018424 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 36 inch 1 Mannings Coefficient Span Rise 0.024 3.00 ft 3.00 ft Outlet Control Properties Outlet Control HW Elev Ke 296.22 ft 0.90 Upstream Velocity Head Entrance Loss 0.58 ft 0.52 ft Inlet Control Properties Inlet Control HW Elev Inlet Type K M C Y 296.08 ft Projecting 0.03400 1.50000 0.05530 0.54000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 7.1 ft2 2 3 1 Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:33:40 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 2 of 2 Culvert Designer/Analyzer Report 18" CMP at Alley and Royder Road Analysis Component Storm Event Design Discharge 7.72 cfs Peak Discharge Method: Rational Design Return Period 25 year Check Return Period 100 year Design Peak Discharge 7.72 cfs Check Peak Discharge 9.12 cfs Total Area 3.10 acres Time of Concentration 15.00 min Weighted C 0.30 Intensity 9.73 in/hr Area Subwatershed (acres) C 1 3.10 0.30 Tailwater Conditions: Constant Tailwater Tailwater Elevation N/A ft Name Description Discharge HW Elev Velocity Culvert-1 1-18 inch Circular 7.72 cfs 295.48 ft 5.69 ft/s Weir Not Considered N/A N/A N/A Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:35:45 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 2 Culvert Designer/Analyzer Report 18" CMP at Alley and Royder Road Component: Culvert-1 Culvert Summary Computed Headwater Elevation Inlet Control HW Elev outlet Control HW Elev Headwater Depth/ Height 295.48 ft 295.42 ft 295.48 ft 1.32 Discharge Tailwater Elevation Control Type 7.72 cis N/A ft Outlet Control Grades Upstream Invert Length 293.50 ft 40.00 ft Downstream Invert Constructed Slope 292.90 ft 0.015000 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream M2 Mild Subcritical 5.69 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 1.08 ft N/A ft 1.08 ft 0.024634 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 18 inch 1 Mannings Coefficient Span Rise 0.024 1.50 ft 1.50 ft Outlet Control Properties Outlet Control HW Elev Ke 295.48 ft 0.90 Upstream Velocity Head Entrance Loss 0.33 ft 0.30 ft Inlet Control Properties Inlet Control HW Elev Inlet Type K M C Y 295.42 ft Projecting 0.03400 1.50000 0.05530 0.54000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Transition 1.8 ft2 2 3 1 Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:35:45 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 2 of 2 Culvert Designer/Analyzer Report 18" CMP at Alley and Royder Road Analysis Component Storm Event Check Discharge 9.12 cfs Peak Discharge Method: Rational Design Return Period 25 year Check Return Period 100 year Design Peak Discharge 7.72 cfs Check Peak Discharge 9.12 cfs Total Area 3.10 acres Time of Concentration 15.00 min Weighted C 0.30 Intensity 9.73 in/hr Area Subwatershed (acres) C 1 3.10 0.30 Tailwater Conditions: Constant Tailwater Tailwater Elevation N/A ft Name Description Discharge HW Elev Velocity Culvert-1 1-18 inch Circular 9.12 cfs 296.02 ft 6.18 ft/s Weir Not Considered N/A N/A N/A Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:36:12 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 2 Culvert Designer/Analyzer Report 18" CMP at Alley and Royder Road Component: Culvert-1 Culvert Summary Computed Headwater Elevation 296.02 ft Discharge 9.12 cfs Inlet Control HW Elev 295.77 ft Tailwater Elevation N/A ft Outlet Control HW Elev 296.02 ft Control Type Outlet Control Headwater Depth/ Height 1.68 Grades Upstream Invert 293.50 ft Downstream Invert 292.90 ft Length 40.00 ft Constructed Slope 0.015000 ft/ft Hydraulic Profile Profile CompositeM2Pressure Depth, Downstream 1.17 ft Slope Type Mild Normal Depth N/A ft Flow Regime Subcritical Critical Depth 1.17 ft Velocity Downstream 6.18 ft/s Critical Slope 0.028426 ft/ft Section Section Shape Circular Mannings Coefficient 0.024 Section Material CMP Span 1.50 ft Section Size 18 inch Rise 1.50 ft Number Sections 1 Outlet Control Properties Outlet Control HW Elev 296.02 ft Upstream Velocity Head 0.41 ft Ke 0.90 Entrance Loss 0.37 ft Inlet Control Properties Inlet Control HW Elev 295.77 ft Flow Control Submerged Inlet Type Projecting Area Full 1.8 ft' K 0.03400 HDS 5 Chart 2 M 1.50000 HDS 5 Scale 3 C 0.05530 Equation Form 1 Y 0.54000 Project Title: Royder Ridge Project Engineer: David R. Mayo c:\haestad\cvm\royder r.cvm Joe Orr, Inc. CulvertMaster v1.0 09/13/01 09:36:12 AM © Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 2 of 2 BOUNDARY CHECK FIELD ANGLE DISTANCE NORTHING FASTING PT. NO. BEARING 15,000.000 15,000.000 1 S 42 40 42 E 210.650 14,845.136 15,142.796 2 S 38 0 15 E 69.110 14,790.680 15,185.348 2 S 38 15 42 E 359.510 14,508.396 15,407.976 3 S 41 32 13 E 8.820 14,501.794 15,413.825 4 S 42 41 55 E 147.210 14,393.605 15,513.654 5 S 46 56 44 W 8.780 14,387.611 15,507.238 6 S 38 23 7 W 35.000 14,360.176 15,485.505 7 ANGLE RT. 93 58 27 S 47 38 26 E 35.000 11.368 15 14,336.594 , 8 DELTA= 93 58 27 RT. ARC= 57.41 RADIUS= 35.00 52 CHORD= 37 51.18 TANG . ENT= S 42 21 34 W 2,206.470 12,706.161 14,024.694 10 ANGLE LT. 90 0 0 N 47 38 26 W 904.930 13,315.885 13,356.011 11 ANGLE RT. 7 46 53 S 39 51 33 E 904.930 35.984 13 12,621.240 , 12 DELTA= 7 46 53 RT. ARC= 122.90 RADIUS= 904. 61 93 54 CHORD= 122.80 TAN . GENT= N 48 1 46 W 564.840 12,998.976 13,516.031 13 N 13 0 33 W 19.470 13,017.947 13,511.649 14 N 16 17 30 W 90.260 13,104.582 13,486.328 15 N 13 33 33 W 21.720 13,125.697 13,481.236 16 N 31 6 41 W 54.900 13,172.700 13,452.869 17 N 8 41 50 W 85.270 13,256.990 13,439.975 18 N 14 26 33 W 29.280 13,285.344 13,432.672 19 N 42 25 46 E 2,323.060 15,000.015 14,999.999 CLOSE S 5 14 12 E 0.015 15,000.000 15,000.000 1 17 DECEMBER 2000 2:54:16 PM ROYDER RIDGE BOUNDARY CHECK FIELD ANGLE PT. NO. BEARING DISTANCE NORTHING EASTING PAGE AREA= 1,983,975. SQ. FT. OR 45.55 ACRES FILE REVIEWED FOR CCnI n.I JAN 2 2 200 COLLEGE S VA 100 ENGINEERING The Estates of Royder Ridge Culvert Analysis 21" CMP on Greens Prairie Trail October 2000 Prepared by: Joe Orr, Inc. Surveyors & Engineers 2167 Post Oak Circle College Station, TX 77845 (979) 690-3378 The Estates of Royder Ridge Culvert Analysis This report address the flow through the 21" Corrugated Metal Pipe Culvert under Greens Prairie Trail just south of the proposed corner of Lots 12 and 13 in Block 2 of the Estates of Royder Ridge. Approximately 13.3 acres of the tract northwest of Greens Prairie Trail collects at the upstream end of this culvert. The culvert is mitered to the embankment slope and is 44' long. The upstream invert elevation is 295.25 and the downstream invert elevation is 295.00. The top of the roadway elevation over the culvert is approximately 299.2. The borrow ditch on the northwest side slopes to the northeast toward Royder Road and the elevation of the top of Royder Road is approximately 296. Using a Pipe Culvert Analysis program from Dodson & Associates, Inc., it was determined that this culvert will flow full at approximately 7.5 cfs. At 10 cfs, the headwater depth will be approximately 297.00. Hydrographs were generated for 10 year, 25 year and 100 year storms. All of these storms would produce runoff that is greater than the capacity of this culvert. The flow would then run northeast down the borrow ditch and overflow Royder Road into a tributary of Peach Creek to the northeast. From the above analysis, we can conclude that it is advisable to fill Lots 9, 10, 11, 12 and 13 and establish minimum floor elevations for structures built on these lots. X& Point of J ' 19 20j ~ ~1AW Aaw #1 ' I ~ I ' 1 ' ~ I~ ~ 111 1 111 ;Ili * Ill - - - 9 T-- - _ - 1r 7 O .W. - 24 P vmt. prqm 1 1~5 10 0 RA i a I~ ~i ■ M4 I it 1 Ap 111.0114 I 41=4 I .17 Awm . D 10C 2 I~ 1 I~ I I A~ 1 b ~ - 1 1.T 7 w I I I I I 1 0 I I I I I ~ h 1 -J --1 --J --1 - J -1 --J -170.0' 17sd- --17W-- i I 7-1 1 I , I I 3.~4r1 '13' E I I I 12 1 1 1 MEL s m.d 1 AWW 1 107 1 1~ 1 Aww I 1.07 Aww , i. I I m s 1 41W E 21' , I 100' R.O.W. w/ 24' Pvmt. (Existing) ~--Exst 21" CMP Culvert W That I ' I 1Cotourr lift l - r Estates of Royder Ridge ' I Drainage Map 21 " CMP Culvert Under Greens Prairie Trail PIPE CULVERT ANALYSIS COMPUTATION OF CULVERT PERFORMANCE CURVE October 1, 2000 PROGRAM INPUT DATA DESCRIPTION VALUE Culvert Diameter (ft) 1.75 FHWA Chart Number 2 FHWA Scale Number (Type of Culvert Entrance) 2 Manning's Roughness Coefficient (n-value) 0.024 Entrance Loss Coefficient of Culvert Opening 0.8 Culvert Length (ft) 44.0 Invert Elevation at Downstream end of Culvert (ft).......... 295.0 Invert Elevation at Upstream end of Culvert (ft)............ 295.25 Culvert Slope (ft/ft) 0.0057 Starting Flow Rate (cfs) 5.0 Incremental Flow Rate (cfs) 2.5 Ending Flow Rate (cfs) 17.5 Starting Tailwater Depth (ft) 0.0 Incremental Tailwater Depth (ft) 0.1 Ending Tailwater Depth (ft) 0.5 COMPUTATION RESULTS Flow Tailwater Headwater (ft) Normal Critical Depth at Outlet Rate Depth Inlet Outlet Depth Depth Outlet Velocity (cfs) (ft) Control Control (ft) (ft) (ft) (fps) 5.0 0.0 1.21 1.37 1.15 0.82 0.82 4.52 7.5 0.1 1.55 1.77 1.75 1.01 1.01 5.19 10.0 0.2 1.88 1.97 1.75 1.18 1.18 5.81 12.5 0.3 2.55 2.53 1.75 1.32 1.75 5.2 15.0 0.4 3.12 3.18 1.75 1.43 1.43 7.11 17.5 0.5 3.77 3.89 1.75 1.53 1.53 7.85 HYDROCALC Hydraulics for Windows, Version 1.2 Copyright (c) 1996 Dodson & Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, TX 77069 Phone:(281)440-3787, Fax:(281)440-4742, Email:software@dodson-hydro.com All Rights Reserved. Hydrograph Plot English Hyd. No. 1 Royder Ridge East Hydrograph type = SCS Runoff Storm frequency = 10 yrs Drainage area = 13.30 ac Basin Slope = 0.3% Tc method = LAG Total precip. = 7.40 in Storm duration = 24 hrs Peak discharge = 26.34 cfs Time interval = 6 min Curve number = 70 Hydraulic length = 770 ft Time of conc. (Tc) = 62.9 min Distribution = Type II Shape factor = 484 1 - SCS Runoff -10 Yr - Qp = 26.34 cfs 30 2 2 N 1 CY 1 Total Volume = 194,271 cuft Hyd. 1 0 5 10 15 20 25 30 Time (hrs) Hydrograph Plot English Hyd. No. 1 Royder Ridge East Hydrograph type = SCS Runoff Storm frequency = 25 yrs Drainage area = 13.30 ac Basin Slope = 0.3% Tc method = LAG Total precip. = 8.80 in Storm duration = 24 hrs Peak discharge = 34.52 cfs Time interval = 6 min Curve number = 70 Hydraulic length = 770 ft Time of conc. (Tc) = 62.9 min Distribution = Type II Shape factor = 484 Total Volume = 253,526 cult 1 - SCS Runoff - 25 Yr - Qp = 34.52 cfs 40 30 T 20 C~ 10 0 0 5 + Hyd. 1 10 15 20 25 30 Time (hrs) Hydrograph Plot English Hyd. No. 1 Royder Ridge East Hydrograph type = SCS Runoff Storm frequency = 100 yrs Drainage area = 13.30 ac Basin Slope = 0.3% Tc method = LAG Total precip. = 11.00 in Storm duration = 24 hrs Peak discharge = 47.69 cfs Time interval = 6 min Curve number = 70 Hydraulic length = 770 ft Time of conc. (Tc) = 62.9 min Distribution = Type II Shape factor = 484 Total Volume = 350,382 cuft 1 - SCS Runoff -100 Yr - Qp = 47.69 cfs 50 40 - N 30 + Hyd. 1 CY 20 10 - - 0 0 5 10 15 20 25 30 Time (hrs) J