Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Drainage Report
DRAINAGE REPORT For CROSSROADS RETAIL CENTER 2611 Harvey Road . . Qr-cl \lfbJ \SliJlJ College Station, Texas uo s--1-DkQ ~ \?J(:L.. Prepared for l ~tel f cUZ~ \-e:>j\~ R.A.I. Designs 0,~ ~~~ 4500 Carter Creek Dr., Suite 203 \? n~ }< ~~ \\t~ Byran, Texas 77802 .\~ ~ ~ <-:::'. Telephone: (877) 690-CADD '\/ ~ ~\,:::::. Prepared by: Berry Engineering Company 1811 Rose Street Bryan, Texas 77802 Telephone: (979) 696-4000 *3rd Revision March, 2008* Table Of Contents REPORT COVER TABLE OF CONTENTS CERTIFICATION REPORT Introduction Existing Drainage Basin Description Proposed Drainage Conclusion Report Methodology DATA DATA-Tabulation of Data for Hydrographs HYDROGROPHS HYDROGRAPH-Mitchell 100-Yr. Storm Event & Mitchell 100-Yr. Cross Roads Post-Dev. Minus Pre-Dev. 100-Yr. Storm Event Hydrograph DRAINAGE REPOR T COMPUTATIONS-Pre-Development: Tc, Time of Concentration and CN, Runoff Curve Number Data COMPUTATIONS-Post-Development: Tc, Time of Concentration and CN, Runoff Curve Number Data Page I Page2 Page3 Page4 Page4 Page 5 Pages Page5 Page7 Page 15 Page 16 Page 30 CERTIFICATION I hereby certify that this report was prepared by me in accordance with the provisions of the Cities Drainage Policy and Design Standards for the Owner thereof. ~ ~E-By·~0/ / r c L.A. Berry, P.E. / Registered Professional Engineer No 74246 State of Texas 3//V'P8- Date INTRODUCTION: DRAINAGE REPORT for CROSSROAD RETAIL CENTER 2611 HARVEY ROAD COLLEGE STATION, TEXAS BRAZOS COUNTY MARCH, 2008 (3rd Revision) This report is submitted to further support the decision that detention of the runoff storm water at the Crossroads Retail Center will not be required. The data and hydrographs calculated for a 24-hour 100-year event storm included in this report support this decision. Review of the data shows that any detention would act to change the time the Crossroads hydrograph peaks relative to the Mitchell 100-year event* hydrograph and could increase the total peak flow rate, even though this increase would be insignificant. *Note: the Mitchell 100-year event depicts the data procured from Mitchell & Morgan Engineers, LLP at the R440 collection point and depicted on the maps (previously presented) originally prepared by Dodson & Associates, Inc. and Mitchell & Morgan, LLP. Crossroads Retail Center is to be located on the north side of Harvey Road adjacent to the Shell gas station and mart, previously know as Springer Chevron. Crossroads physical address is 2611 Harvey Road, College Station, Texas. EXISTING DRAINAGE BASIN DESCRIPTION: The proposed Crossroads Retail Center is comprised of 2.39 acres located along the northern side of Harvey Road approximately 300 feet east of the intersection of Harvey Road and State Highway 6 East Frontage Road. 4 Contiguous and parallel to the northern property line is an engineered concrete floodway that was constructed to carry the storm-water from an area of 0.5 square miles surrounding and including the Crossroad property. The floodway is designed to carry the storm-water exiting from 3 each 4'x8 ' box culverts and, also, the stromwater from the property along the northern side of Harvey Road that runs from Crossroads to a location (collection point) approximately 2000 feet downstream. The elevation changes approximately eleven feet from the three box culverts flow line elevation to the surface elevation at the collection point. The collection point for study is depicted as R440 on the CARTERS CREEK FHS DRAINAGE BASIN AND HEC-HMS REACH AND JUCTION MAP, Appendix Al, by Dodson & Associates, Inc. and Mitchell & Morgan, LLP, April 2006 (previously submitted). PROPOSED DRAINAGE: Crossroads Retail Center will drain directly into the floodway via a series of openings in the Crossroads concrete driveway along the northeast perimeter of the property. There will be no detention of storm-water and no collection within the parking lot or driveway. A hydrograph representing the difference between the post-development 100-year event and pre-development 100-year event storm-water runoff from Crossroads was plotted with the hydrograph for the Mitchell 100-year event. Review of the data shows the contribution from the Crossroads 100-year event is 0.0701 cps during the Mitchell 100- year event peak flow rate of 20,325 .0000 cps. This contribution is of such small value compared to the Mitchell event that it is not distinguishable as separate hydrographs that depict the complete events. CONCLUSION: Detention of storm water at the Crossroads Retail Center would not operate to any significant benefit. Detention allows collection of storm water and a throttled discharge possibly adding to the floodway total peak discharge for the 100-year event. Allowing the Crossroads runoff to free flow into the concrete floodway adjacent to the site would, worst-case situation, only add 0.0701 cps to the existing 20,325.0000 cps flow rate. This insignificant increase would be nearly impossible to measure in comparison to the existing peak flow. However, detention would move the hydrographs in time and could add more than 0.0701 cps to the floodway total peak discharge for the event. REPORT METHODOLOGY: The SCS Hydrograph Method, as adopted by the City of College Station, was used to produce Drainage Report hydrographs and computations. Bentley Systems, Inc, computer software Bentley Pondpack (10.00.027.00) and USDA Development Team software WinTR-55, Version 1.00.08 were used to produce this report. 5 The maps (previously presented) were originally prepared by Dodson & Associates, Inc. and Mitchell & Morgan, LLP and submitted to FEMA LOMA Depot and to the City of College Station, Texas in request for a LOMR (Letter of Map Revision) in Carter's Grove Creek. 6 A TABULATION OF HYDROGRAPHS FOR CROSS ROADS POST DEVELOPMENT I 00-YR. STORM EVENT, CROSS ROADS PRE DEVELOPMENT I 00-YR. STORM EVENT , EXISTING MITCHELL I 00-YR. STORM EVENT AND EXISTING MITCHELL I 00-YR. STORM EVENT INCLUDING CROSS ROADS POST DEVELOPMENT I 00-YR. STORM EVENT Cross Roads Cross Roads Difference In Cro'.35 Roads Ex15t1ng Mitchell I 00-Yr. Ex1st1ng Mitchell I 00-Yr. Post D<":velopment Pre Development Pre If. Post Development Storm Event Storm Event I 00-Yr·. Storm Event I 00-Yr. Storm Event I 00-Yr. Storm Events PIU5 Tirne Run-Off Rate Time Run-Off Rate Time Run-Off Rate Time Run-Off Rate Cross Roads Post (l"lou~) (Cu.Ft./5ec.) (Hours) (Cu.ft./5ec.) (Hours) (Cu.Ft./5ec.) (Hours) (Cu.Ft./Sec.) Development I 00-Yr. Storm Event Time Run-Off Rate (Hours) (Cu.ft./5ec.) 0.0000 0.0000 0.0000 0.0000 0.0000 0 .0000 0.0000 0.0000 0.0000 0.0000 0.0833 0.0000 0.0833 0.0000 0 .0833 0.0000 0.0833 0.0000 0.0833 0.0000 0. IGGG 0.0000 O. IGGG 0.0000 O.IGGG 0.0000 O.IGGG 0.1000 O. IGGG 0.1000 0.2499 0.0000 0.2499 0.0000 0.2499 0.0000 0.2499 0.2000 0.2499 0.2000 0.3332 0.0000 0.3332 0.0000 0.3332 0.0000 0.3332 0.4000 0.3332 0.4000 0.41 GS 0.0000 0.41 GS 0.0000 0.41 GS 0.0000 0.41 GS 0.7000 0.41 GS 0 .7000 0.4998 0.0000 0.4998 0.0000 0.4998 0.0000 0.4998 1.1000 0.4998 1.1000 O.S831 0 .0000 0.5831 0.0000 O.S831 0.0000 O.S831 I .SOOO 0.S831 1.5000 O.GGG4 0.0000 O.GGG4 0.0000 0.GGG4 0.0000 O.GGG4 2.0000 O.GGG4 2.0000 0.7497 0.0000 0.7497 0.0000 0.7497 0.0000 0.7497 2.SOOO 0.7497 2.5000 0.8330 0 .0000 0.8330 0.0000 0.8330 0.0000 0.8330 2.9000 0.8330 2.9000 0.91G3 0.0000 0.91G3 0.0000 0.91G3 0.0000 0.91G3 3.3000 0.91G3 3.3000 0.999G 0.0000 0.999G 0 .0000 0 .999G 0.0000 0.999G 3.7000 0.999G 3.7000 1.0829 0.0000 1.0829 0.0000 1.0829 0.0000 .0829 4.1000 1.0829 4.1000 I .IGG2 0.0000 I. IGG2 0.0000 I. IGG2 0.0000 . I GG2 4.GOOO 1. IGG2 4.GOOO I .249S 0 .0008 1.2495 0.0000 I .249S 0.0008 .249S S.1000 I .249S S.1008 1.3328 0.0049 1.3328 0.0000 1.3328 0.0049 .3328 S.7000 1.3328 S.7049 1.41 GI 0 .0111 I .41 GI 0.0000 1.41 GI 0 .0111 .4 IGI G.SOOO 1.41 GI G.SI 11 1.4994 0.0178 1.4994 0.0000 1.4994 0.0178 .4994 7.5000 1.4994 7.5178 I .S827 0.0244 I .S827 0.0000 1.5827 0.0244 .5827 8.8000 I .5827 8 .8244 I .GGGO 0.0308 I .GGGO 0.0000 I .GGGO 0.0308 .GGGO 10.3000 I .GGGO 10.3308 1.7493 0.0370 · 1.7493 0.0000 1.7493 0.0370 .7493 12.3000 1.7493 12.3370 I .832G 0.0429 I .832G 0 .0000 I .832G 0.0429 .832G 14.GOOO I .832G 14.G429 I .91S9 0 .048G 1.9159 0.0000 I .91 S9 0.048G .9159 17.4000 I .91 S9 17.448G 1.9992 0.0541 1.9992 0.0000 1.9992 O.OS4 1 .9992 20.GOOO 1.9992 20.G541 2 .0825 2. IG58 2.2491 2.3324 2.41 57 2.4990 2 .5823 2.GG5G 2.7489 2.8322 2.9155 2.9988 3.0821 3.IG54 3.2487 3.3320 3.41 53 3.498G 3.5819 3.GG52 3.7485 3.8318 3.9151 3.9984 4.0817 4. /G50 4.2483 4.33/G 4.4149 4.4982 4.581 5 4.GG48 4.7481 4.8314 4.9147 4.9980 5.0813 5. IG4G 5.2479 5.3312 5.4145 5.4978 0.0595 O.OG5/ 0.0707 0.07GG 0.0823 0.0882 0.0940 0.0997 0.105G 0.1112 0.1171 0.1228 0.1285 0.1343 0.1398 0.145G 0.151 I O. I 5G8 O. IG24 O. IG78 0.173G 0.1789 0.1845 0.1900 0.1953 0.2009 0.20GO 0.21 I G 0.21G8 0.2222 0.2275 0.232G 0.2380 0.2430 0.2484 0.2535 0.2585 0.2G38 0.2G8G 0.2739 0.2787 0.2838 2.0825 2.1 G58 2.2491 2 .3324 2.41 57 2.4990 2.5823 2.GG5G 2.7489 2.8322 2.9155 2.9988 3.0821 3. IG54 3.2487 3.3320 3.4153 3.498G 3.5819 3.GG52 3.7485 3.8318 3.9151 3.9984 4.0817 4.IG50 4.2483 4.33/G 4.4149 4.4982 4.5815 4.GG48 4.7481 4.8314 4.9147 4.9980 5.0813 5. IG4G 5.2479 5.3312 5.4145 5.4978 0.0000 0.0000 0.0000 0.0000 0.0000 0 .0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0 .0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0013 0.0037 2.0825 2. JG58 2.2491 2.3324 2.4157 2.4990 2.5823 2.GG5G 2.7489 2.8322 2.9155 2.9988 3.0821 3.1 G54 3.2487 3 .3320 3.41 53 3.498G 3.5819 3.GG52 3.7485 3.8318 3 .9151 3.9984 4.0817 4. /G50 4.2483 4.33/G 4.4149 4.4982 4.5815 4.GG48 4.7481 4.8314 4.9147 4.9980 5.0813 5. IG4G 5.2479 5.3312 5.4145 5.4978 0.0595 O.OG51 0.0707 0.07GG 0.0823 0.0882 0.0940 0.0997 0.105G 0.1I12 0.1171 0.1228 0.1285 0./343 0.1398 0. /45G 0.1511 O. I 5G8 O. IG24 O. JG78 0.173G 0.1789 0.1845 0.1900 0.1953 0.2009 0.20GO 0.21 IG 0.2/G8 0.2222 0.2275 0.232G 0.2380 0.2430 0.2484 0.2535 0.2585 0.2G38 0.2G8G 0.2738 0.2774 0.2801 2.0825 2.1 G58 2.2491 2.3324 2.41 57 2.4990 2.5823 2.GG5G 2.7489 2.8322 2.9155 2.9988 3.0821 3. IG54 3.2487 3.3320 3.4153 3.498G 3.5819 3.GG52 3.7485 3.8318 3.9151 3.9984 4.0817 4. IG50 4.2483 4.331G 4.4149 4.4982 4.5815 4.GG48 4.7481 4.8314 4.9147 4.9980 5.0813 5. JG4G 5.2479 5.3312 5.4145 5.4978 24.400u 28.7000 33.4000 38.7000 44.4000 50.4000 5G.9000 G3.GOOO 70.5000 77.GOOO 84.7000 91.9000 99.0000 IOG.1000 I 13.0000 I 19.8000 I 2G.3000 132.7000 139.0000 145.0000 150.9000 I 5G.GOOO JG2.1000 I G7.GOOO 172.9000 178.2000 183.3000 188.3000 193.3000 198.2000 203.0000 207.8000 212.5000 217.1000 221.7000 22G.2000 230.7000 235.2000 239.GOOO 244.1000 248.GOOO 253.1000 2.0825 2.1 G58 2.2491 2.3324 2.4157 2.4990 2.5823 2.GG5G 2.7489 2.8322 2.9155 2.9988 3.0821 3. IG54 3.2487 3.3320 3.4153 3.498G 3.5819 3.GG52 3.7485 3.8318 3.9151 3.9984 4 .0817 4. IG50 4.2483 4.33/G 4.4149 4.4982 4.5815 4.GG48 4.7481 4.8314 4.9147 4.9980 5.0813 5. IG4G 5.2479 5.3312 5.4145 5.4978 24.4595 28.7G5 J 33.4707 38.77GG 44.4823 50.4882 5G.9940 G3.G997 70.G05G 77.71 12 84.8171 92.0228 99.1285 I OG.2343 I 13.1398 I I 9.945G 12G.4511 132.85G8 139.IG24 145.1 G78 151 .073G I 5G.7789 I G2.2845 I G7.7900 173.0953 178.4009 I 83.50GO 188.51 JG 193.5JG8 198.4222 203.2275 208.032G 212.7380 217.3430 221 .9484 22G.4535 230.9585 235.4G38 239.8G8G 244.3738 248.8774 253.3801 5.581 I 5.GG44 5.7477 5.8310 5.9143 5.997G G.0809 G. I G42 G.2475 G.3308 G.4141 G.4974 G.5807 G.GG40 G.7473 G.830G G.9139 G.9972 7.0805 7.IG38 7.2471 7.3304 7.4137 7.4970 7.5803 7.GG3G 7.74G9 7.8302 7.9135 7.99b8 8 .0801 8 . IG34 8.24G7 8.3300 8.4133 8.49GG 8.5799 8.GG32 8.74G5 8.8298 8.9131 8.99G4 0.2888 0.2935 0.2987 0.3033 0.3084 0.3132 0.3189 0.32G9 0.3358 0 .3470 0 .3574 0.3G8G 0.3799 0.3905 0.4023 0.4130 0.4249 0.43G2 0.4475 0.4595 0.4704 0.4827 0.4940 0.5059 0.5180 0.5292 0.5417 0.5529 0.5G53 0.5772 0.590G 0 .G089 O.G307 0.G553 O.G799 0.7050 0 .7303 0.7550 0.7808 0.8059 0 .8320 0.8577 5.5811 5.GG44 5.7477 5.8310 5.9143 5.997G G.0809 G.IG42 G.2475 G.3308 G.4141 G.4974 G.5807 G.GG40 G.7473 G.830G G.9139 G.9972 i.0805 7.IG38 7.2471 7.3304 7.4137 7.4970 7.5803 7.GG3G 7.74G9 7.8302 7.9135 7.99G8 8.0801 8. IG34 8.24G7 8.3300 8.4133 8.49GG 8.5799 8.GG32 8.74G5 8.8298 8.9131 8.99G4 O.OOG7 0.0100 0.0133 O.OIG7 0.0201 0.023G 0.0272 . 0.0310 0.0351 0.039b 0.0443 0 .0492 0.0543 0.059G O.OG52 0.0710 0.0770 0.0832 0.089b 0.09b3 0.1030 0.1102 0.1174 0.1249 0.132G 0.1404 0.148G O.l 5G7 O. IG53 0.1739 0.1831 0.1939 0.20G3 0.2201 0.2345 0.2495 0.2G52 0 .2812 0 .2981 0.3153 0.3332 0 .351G 5.581 I 5.GG44 5.7477 5.8310 5.9143 5.997(; G.0809 G. I G42 G.2475 G.3308 G.4141 G.4974 G.5807 G.GG40 G.7473 G.830G G.9139 G.9972 7.0805 7. IG38 7.2471 7.3304 7.41 37 7.4970 7.5803 7.GG3G 7.74G9 7.8302 7.9135 7.99G8 8.0801 8 . IG34 8.24G7 8.3300 8.4133 8.49GG 8 .5799 8.GG32 8.74G5 8.8298 8.9131 8.99G4 0.2821 0.2835 0.2854 0.28GG 0.2883 0.289G 0.2917 0.2959 0.3007 0.3074 0 .3131 0.3194 0 .325G 0.3309 0.3371 0.3420 0.3479 0.3530 0.3579 0.3G32 0 .3b74 0.3725 0.37GG 0.3810 0.3854 0.3888 0.3931 0.39G2 0.4000 0.4033 0.4075 0.4150 0.4244 0.4352 0.4454 0.4555 0.4G5 I 0.4738 0.4827 0.490G 0.4988 0 .50GI 5.581 I 5.GG44 5.7477 5.8310 5.9143 5.997G G.0809 G. IG42 G.2475 G.3308 G.4141 G.4974 G.5807 G.GG40 G.7473 G.830G G.9139 G.9972 7.0805 7. IG38 7.2471 7.3304 7.4137 7.4970 7.5803 7.GG3G 7.74G9 7.8302 7.9135 7.99G8 8 .0801 8 . IG34 8.24G7 8.3300 8.4133 8.49GG 8.5799 8.GG32 8.74G5 8.8298 8 .9131 8.99G4 257.70uv 2G2.5000 2G7.3000 272.3000 277.5000 282.9000 288.4000 294.3000 300.4000 30G.8000 313.GOOO 320.7000 328.2000 33G. IOOO 344.4000 353.2000 3G2.5000 372.3000 382.GOOO 393.4000 404.8000 41 G.8000 429.4000 442.5000 45b.3000 470.7000 485.8000 501.4000 517.7000 534.GOOO 552.2000 570.4000 589.3000 G08.8000 G29.0000 G49.9000 G71 .GOOO G93.9000 717.1000 741.0000 7G5.7000 791.3000 5.5811 5.GG44 5.7477 5.8310 5.9143 5.997G G.0809 G. IG42 G.2475 G.3308 G.4141 G.4974 G.5807 G.GG40 G.7473 G.830G G.9139 G.9972 7.0805 7. IG38 7.2471 7.3304 7.4137 7.4970 7.5803 7:GG3G 7.74G9 7.8302 7.9135 7.99G8 8.0801 8. IG34 8.24G7 8.3300 8.4133 8.49GG 8.5799 8 .GG32 8.74G5 8.8298 8.9131 8.99G4 257.9821 2G2.7835 2G7.5854 272.58GG 277.7883 283.189b 288.G917 294.5959 300.7007 307.1074 313.9131 321.0194 328.525G 33G.4309 344.7371 353.5420 3G2.8479 372.G530 382.9579 393.7G32 405. I G74 417.1725 429.77GG 442.8810 45b.G854 471.0888 48G.1931 501.79(;2 518.1000 535.0033 552.G075 570.8150 589.7244 G09.2352 G29.4454 G50.3555 G72.0G5 I G94.3738 717.5827 74 I .490G 7GG. I 988 791.80G I 9.0797 9.IG30 9.24G3 9.329G 9.4129 9.49G2 9 .5795 9.GG28 9.74GI 9.8294 9.9127 9.99b0 10.0793 IO.IG2G 10.2459 I 0.3292 I 0.4125 10.4958 10.5791 I O.GG24 I 0.7457 10.8290 10.9123 I 0.995G I 1.0789 I I. I G22 I 1.2455 11.3288 I I .4121 I I .4954 I 1.5787 I I .GG20 I 1.7453 I I .828G I 1.9119 I 1.9952 12.0785 12. IG/8 12.2451 12.3284 12.4117 I 2.4950 0.8833 0.9095 0.9348 0.9Gl4 0.9874 1.0137 1.0401 I .OG58 I .092G . I 18G .1454 .1718 .201G .2405 1.2877 .3395 .3921 .4451 .4982 .5509 .G044 I .G577 1.71 JG 1.7G55 1.8393 I .9GIO 2.1309 2.3241 2.5222 2.7244 3. IG3G 4 .1485 5.740G 7.553G 9.5337 14.2975 19.4512 19.G972 I 4.59GG 10.8847 8.434G G.34G4 9.0797 9. IG30 9.24G3 9.329G 9.4129 9.49G2 9.5795 9.GG28 9.74GI 9.8294 9.9127 9.99GO 10.0793 JO.IG2G I 0.2459 I 0.3292 I 0.4125 10.4958 10.5791 IO.GG24 I 0.7457 10.8290 10.9123 I 0.995G 11.0789 I I. I G22 I 1.2455 I 1.3288 I I .4121 I I .4954 11.5787 I I .GG20 I 1.7453 I I .828G I 1.9119 11.9952 12.0785 12. IGl8 12.2451 12.3284 12.41 17 I 2.4950 0.3704 0.3898 0.409G 0.430 I 0.4510 0.4724 0.4943 0.51G4 0.5393 0.5G24 0.58GO O.GIOI O.G358 O.GGG3 0.702G 0.7422 0.7837 0.82G4 0.8702 0.9150 0.9G09 1.0079 1.0559 1.1047 I. IG45 1.2534 1.3770 1.5222 1.G777 1.8403 2.1341 2.8045 3.93GG 5.3577 7.0093 10.5224 15.1939 I G.G243 13.3881 IO. IG40 7.9G4G G.1059 9.0797 9. IG30 9.24G3 9.329G 9.4129 9.49G2 9.5795 9.GG28 9 .74GI 9.8294 9.9127 9.99GO 10.0793 IO.IG2G I 0.2459 I 0.3292 I 0.4125 I 0.4958 10.5791 I O.GG24 I 0.7457 10.8290 10.9123 I0.995G I 1.0789 I I. I G22 I 1.2455 I 1.3288 I I .4121 I I .4954 11.5787 1.1.GG20 I 1.7453 I I .828G 11.91 19 I 1.9952 12.0785 12.IG/8 12.2451 12.3284 12.41 17 I 2.4950 0.5129 0.5197 0.5252 0.5313 0.53G4 0.5413 0.5458 0.5494 0.5533 0.55G2 0.5594 0.5Gl7 0.5G58 0.5742 0.5851 0.5973 0.G084 O.Gl87 O.G280 O.G359 O.G435 O.G498 O.G557 O.GG08 O.G748 0.707G 0.7539 0.8019 0.8445 0 .8841 .0295 1.3440 1.8040 2.1959 2.5244 3.7751 4.2573 3.0729 1.2085 0.7207 0.4700 0 .2405 9.0797 9.IG30 9.24G3 9.329G 9.4129 9.49G2 9.5795 9.GG28 9.74GI 9.8294 9.9127 9.99GO 10.0793 10.IG2G I 0.2459 10.3292 I 0.4125 10.4958 10.5791 10.GG24 I 0.7457 10.8290 10.9123 I 0.995G 11.0789 I 1.1 G22 I 1.2455 11.3288 I I .4121 I I .4954 11.5787 I I .GG20 I 1.7453 I I .828G I 1.9119 I 1.9952 12.0785 12.IGl8 12.2451 12.3284 12.41 17 I 2.4950 817.8000 845.2000 873.GOOO 903.1000 933.7000 9G5.5000 998.GOOO 1033.1000 IOG9. IOOO I IOG.7000 I 14G.OOOO I 18G.9000 1229.GOOO 1274.1000 1320.5000 I 3G8.8000 1419.0000 1471.3000 1525.7000 1582. I 000 I G40.8000 1701.GOOO 17G4.7000 1830.2000 1898. /000 19G8.GOOO 2042.0000 2118.GOOO 2198.9000 2283.4000 2373.0000 24G9. I 000 2574.3000 2G9/ .9000 2827.1000 2988.3000 318G.7000 343G.3000 3754.3000 4171.4000 5152.0000 5911.3000 9.0797 9. IG30 9.24G3 9.329G 9.4129 9.49G2 9.5795 9.GG28 9.74GI 9.8294 9.9127 9.99GO 10.0793 IO.IG2G I 0.2459 10.3292 I 0.4125 I 0.4958 10.5791 I O.GG24 I 0.7457 10.8290 10.9123 10.995G I 1.0789 I I. I G22 I 1.2455 11.3288 I I .4121 I I .4954 I 1.5787 I I .GG20 I 1.7453 I I .828G I 1.9119 I 1.9952 12.0785 I 2. IGl8 12.2451 12.3284 12.41 17 12.4950 818.3129 845.7197 874.1252 903.G3 I 3 934.23G4 9GG.04 I 3 999.1458 1033.G494 IOG9.G533 I I 07.25G2 I 14G.5594 I I 87.4G 17 1230.1 G58 1274.G742 1321.0851 I 3G9.3973 1419.G084 1471.9187 152G.3280 1582.7359 I G4 I .4435 1702.2498 I 7G5.3557 1830.8G08 1898.7748 I 9G9.307G 2042.7539 21 19.4019 2199.7445 2284.2841 2374.0295 2470.4440 257G.1040 2G94.0959 2829.G244 2992.0751 3190.9573 3439.3729 3755.5085 4172.1207 5152.4700 591 1.5405 12.5783 12.GGI G 12.7449 12.8282 12.9115 12.9948 13.0781 13. IGl4 13.2447 13.3280 13.41 13 I 3.494G 13.5779 13.GG 12 13.7445 13.8278 13.9111 13.9944 14.0777 14.IGIO 14.2443 I 4.327G 14.4109 14.4942 14.5775 14.GG08 14.7441 14.8274 14.9107 14.9940 15.0773 15.JGOG 15.2439 15.3272 15.4105 15.4938 15.5771 I 5.GG04 15.7437 15.8270 15.9103 I 5.993G 4.GI 15 3.4975 2.97G7 2.G83G 2.4557 2.2485 2.0G85 J .93G7 1.8574 .79G7 .7419 .G889 .G3G4 1.5845 1.5320 .479G .42G8 .3742 .325G .2857 I .25G2 1.2291 .2037 .1784 .1530 .1285 .1029 1.0781 I .052G 1.0274 I .002G 0.9771 0.9525 0.92G9 0.9018 0.87GG 0.8512 0.82GG 0.8011 0.77G2 0.7507 0.7255 12.5783 12.GGIG 12.7449 12.8282 12.91 15 12.9948 13.0781 13. IGl4 13.2447 13.3280 13.41 13 I 3.494G 13.5779 13.GGI 2 13.7445 13.8278 13.91 I I 13.9944 14.0777 14.IGIO 14.2443 I 4.327G 14.4109 14.4942 14.5775 14.GG08 14.7441 14.8274 14.9107 14.9940 15.0773 15.IGOG 15.2439 15.3272 I 5.4105 I 5.4938 15.5771 15.GG04 15.7437 15.8270 15.9103 I 5 .993G 4.50GG 3.3894 2.8139 2.5048 2.2817 2.0881 1.9197 1.7935 1.7131 .G552 .G049 .5572 .5105 .4G40 .4172 .3700 I .322G 1.2754 1.230G 1.1932 I. IG47 1.1398 I. I IGG 1.0938 1.0711 1.0487 1.0258 1.0032 0.9802 0.9573 0.9347 0.91 JG 0.8890 0.8G5G 0.842G 0.819G 0.79G4 0.7737 0.7503 0.7272 0.7039 O.G80G 12.5783 12.GGIG 12.7449 12.8282 12.9115 12.9948 13.0781 I 3. IGl4 13.2447 13.3280 13.41 13 13.494G 13.5779 13.GGI 2 13.7445 13.8278 13.9111 13.9944 14.0777 14. IGIO 14.2443 14.327G 14.4109 14.4942 14.5775 14.GG08 14.7441 14.8274 14.9107 14.9940 15.0773 15. IGOG 15.2439 15.3272 15.4105 15.4938 15.5771 I 5.GG04 15.7437 15.8270 15.9103 15.993G 0.1049 0.1081 O.IG28 0.1788 0.1740 O. IG04 0.1488 0.1432 0.1443 0.1415 0.1370 0.1317 0.1259 0.1205 0.1148 0.109G 0.1042 0.0988 0.0950 0.0925 0.0915 0.0893 0.0871 0.084G 0.0819 0.0798 0.0771 0.0749 0.0724 0.0701 O.OG79 O.OG55 O.OG35 O.OGl3 0.0592 0.0570 0 .0548 0.0529 0.0508 0.0490 0.04G8 0.0449 12.5783 12.GGIG 12.7449 12.8282 12.9115 12.9948 13.0781 13.IGl4 13.2447 13.3280 13.41 13 I 3.494G 13.5779 13.GGI 2 13.7445 13.8278 13.91 I I 13.9944 14.0777 14. IGIO 14.2443 l 4.327G 14.4109 14.4942 14.5775 14.GG08 14.7441 14.8274 14.9107 14.9940 15.0773 15. IGOG 15.2439 15.3272 I 5.4105 15.4938 15.5771 I 5.GG04 15.7437 15.8270 15.9103 15.993G G8G8.Gv00 7G55.7000 8431.2000 91 G2.9000 9875.1000 105G7.5000 I 1240.1000 I 1887.GOOO I 250G.5000 13071 .1000 I 3G58.8000 14214.9000 I 473G.4000 15228.4000 1571 1.7000 I GI 99.8000 I GG93.7000 17189.9000 17G57.9000 18092.7000 ·1 8497 .GOOO 18872.9000 19213.9000 19514.1000 19773.9000 19985.GOOO 20148.0000 202G0.8000 20321.4000 20325.0000 202G4.8000 20132.7000 19922.1000 I 9G30.GOOO I 92G3.9000 18839.2000 18378.9000 17892.0000 17410.2000 I G958.7000 I G557.3000 I G2 I 9.8000 12.5783 12.GGI G 12.7449 12.8282 12.9115 12.9948 13.0781 13. IGl4 13.2447 13.3280 13.41 13 I 3.494G 13.5779 13.GGI 2 13.7445 13.8278 13.91 I I 13.9944 14.0777 14.IGIO 14.2443 I 4.327G 14.4109 14.4942 14.5775 14.GG08 14.7441 14.8274 14.9107 14.9940 15.0773 15.IGOG 15.2439 15.3272 15.4105 I 5.4938 15.5771 I 5.GG04 15.7437 15.8270 15.9103 15.993G G8G8.7049 7G55.8081 843 I .3G28 91 G3.0788 9875.2740 105G7.GG04 I 1240.2488 11887.7432 I 250G.G443 13071 .2415 13G58.9370 14215.0317 l 473G.5259 15228.5205 1571 1.8148 I Gl99.909G I GG93.8042 17189.9988 17G57.9950 18092.7925 I 8497.G915 18872.9893 19213.9871 195 I 4. I 84G 19773.9819 I 9985.G798 20148.0771 202G0.8749 20321.4724 20325.0701 202G4.8G79 20132.7G55 19922.1 G35 I 9G30.GG 13 I 92G3.9592 18839.2570 18378.9548 17892.0529 17410.2508 I G958.7490 I G557.34G8 I G2 I 9.8449 I G.07G9 IG. IG02 I G.2435 I G.32G8 I G.4101 I G.4934 I G.57G7 I G.GGOO I G.7433 I G.82GG IG.9099 I G.9932 I 7.07G5 17.1598 17.2431 I 7.32G4 17.4097 17.4930 I 7.57G3 17.G59G 17.7429 I 7.82G2 17.9095 17.9928 18.07GI 18.1594 18.2427 18.32GO 18.4093 18.492G 18.5759 18.G592 18.7425 18.8258 18.9091 18.9924 19.0757 19.1590 19.2423 I 9.325G 19.4089 19.4922 0.7029 O.G845 O.GG99 O.G587 O.G472 O.G3GI O.G255 O.Gl41 0.G039 0.5923 0.581G 0.570G 0.5594 0.5491 0.5375 0.5271 0.5157 0.5048 0.4942 0.4827 0.4725 0.4G09 0.4502 0.4392 0.428G 0.4213 0.4172 0.4132 0.4100 0.40G7 0.4033 0.4003 0.39G7 0.3937 0.3902 0.38G9 0.3838 0.3802 0.3773 0.3737 0 .370G 0 .3G73 I G.07G9 IG. IG02 I G.2435 I G.32G8 I G.4101 I G.4934 G.57G7 G.GGOO G.7433 G.82GG G.9099 G.9932 7.07G5 7.1598 7.2431 7.32G4 7.4097 7.4930 7.57G3 7.G59G 17.7429 17.82G2 17.9095 17.9928 18.07GI 18.1594 18.2427 I 8.32GO 18.4093 18.492G 18.5759 I 8.G592 18.7425 18.8258 18.9091 18.9924 19.0757 19.1590 19.2423 I 9.325G 19.4089 19.4922 O.G593 O.G415 O.G274 O.GIG4 O.G058 0.5955 0.5858 0.5753 0 .5G57 0.5552 0.5452 0.5352 0 .5248 0.5152 0.504G 0.4948 0.4845 0.4742 0.4G44 0.4538 0.4441 0.433G 0.4235 0.4135 0.4034 0.39GI 0.391G 0.3879 0.3848 0.3818 0.378G 0.3758 0.3725 0.3G97 0.3GGG 0.3G35 0.3GOG 0 .3574 0.354G 0.3513 0 .3483 0 .3454 I G.07G9 IG. IG02 I G.2435 I G.32G8 I G.4101 I G.4934 I G.57G7 IG.GGOO I G.7433 I G.82GG IG.9099 I G.9932 I 7.07G5 17.1598 17.243 1 I 7.32G4 17.4097 17.4930 17.57G3 I 7.G59G 17.7429 I 7.82G2 17.9095 17.9928 18.07GI 18.1594 18.2427 18.32GO 18.4093 I 8.492G 18.5759 18.G592 18.7425 18.8258 18.9091 18.9924 19.0757 19.1 590 19.2423 19.325G 19.4089 19.4922 0.043G 0.0430 0.0425 0.0423 0.0414 0.040G 0.0397 0.0388 0.0382 0.0371 0.03G4 0.0354 0.034G 0.0339 0 .0329 0.0323 0.0312 0.030G 0.0298 0.0289 0.0284 0.0273 0.02G7 0.0257 0.0252 0.0252 0.025G 0.0253 0.0252 0.0249 0.0247 0.0245 0.0242 0.0240 0.023G 0.0234 0.0232 0.0228 0.0227 0.0224 0.0223 0.0219 I G.07G9 IG. IG02 I G.2435 I G.32G8 I G.4101 I G.4934 I G.57G7 I G.GGOO I G.7433 I G.82GG I G.9099 I G.9932 17.07G5 17.1598 17.243 1 I 7.32G4 17.4097 17.4930 17.57G3 17.G59G 17.7429 I 7.82G2 17.9095 17.9928 18.07GI 18.1594 18.2427 I 8.32GO 18.4093 18.492G 18.5759 18.G592 18.7425 18.8258 18.9091 18.9924 19.0757 19.1590 19.2423 I 9.325G 19.4089 19.4922 I 5952. I vOO 15757. I 000 15G22.9000 I 5537.8000 I 549G.4000 15491.GOOO 15513.5000 15551 .1000 15593.2000 I 5G30.7000 I 5G54. IOOO I 5G57.7000 I 5G37.3000 15590.GOOO 15517.5000 1541 G.4000 15289.2000 I 513G.8000 149G0.9000 147G3. IOOO 14545.3000 14309.5000 14058.0000 13794.0000 13521 .0000 13243.3000 I 29GG.4000 I 2G94.7000 12432.8000 121 G8.8000 11914.9000 I I G54.3000 1I39G. IOOO I I 139.8000 10887.3000 IOG39.0000 10395.1000 10155.1000 9918.7000 9G85.2000 9454.1000 9225.3000 I G.07G9 IG. IG02 I G.2435 I G.32G8 I G.4101 I G.4934 I G.57G7 IG.GGOO I G.7433 I G.82GG I G.9099 I G.9932 17.07G5 17.1598 17.243 1 I 7.32G4 17.4097 17.4930 I 7.57G3 I 7.G59G 17.7429 I 7.82G2 17.9095 17.9928 18.07GI 18.1594 18.2427 18.32GO 18.4093 I 8.492G 18.5759 I 8.G592 18.7425 18.8258 18.9091 18.9924 19.0 757 19.1590 19.2423 I 9.325G 19.4089 19.4922 I 5952. I 43G 15757.1430 15G22.9425 15537.8423 I 549G.44 I 4 I 5491.G40G 15513.5397 15551.1388 15593.2382 I 5G30.737 I 15G54. I 3G4 15G57.7354 15G37.334G I 5590.G339 1551 7.5329 I 541 G.4323 15289.2312 I 5 I 3G.830G 149G0.9298 147G3. I 289 14545.3284 14309.5273 I 4058.02G7 13794.0257 13521.0252 13243.3252 I 29GG.425G I 2G94.7253 12432.8252 121 G8.8249 11914.9247 I I G54.3245 I 139G.1242 I I 139.8240 10887.323G IOG39.0234 I 0395.1232 10155.1228 9918.7227 9G85.2224 9454.1223 9225.3219 19.5755 I 9.G588 19.742 1 19.8254 19.9087 19.9920 20.0753 20. I 58G 20.2419 20.3252 20.4085 20.4918 20.5751 20.G584 20.74 17 20.8250 20.9083 20.991 G 21 .0749 21.1582 21.2415 21.3248 21 .4081 21 .4914 21.5747 2 I .G580 21.7413 2 I .824G 21.9079 21.9912 22.0745 221578 22.241 I 22.3244 22.4077 22.4910 22.5743 22.G57G 22.7409 22.8242 22.9075 22.9908 0.3G38 0.3G09 0.3573 0 .3543 0.3508 0.3475 0 .3444 0.341 I 0.339G 0.33GG 0.3337 0.3313 0.3291 0.32GG 0.3232 0.3215 0.3189 0.31G7 0.3149 0.3117 0.3091 0.30G8 0.3045 0.3015 0.2987 0.2971 0.2941 0.2925 0 .2900 0 .2870 0.2845 0.2822 0.2799 0.27G5 0.2745 0.2723 0 .2G97 0.2G81 0.2G50 0.2G23 0.2599 0.2577 19.5755 19.G588 19.742 1 19.8254 19.9087 19.9920 20.0753 20. I 58G 20.2419 20.3252 20.4085 20.4918 20.5751 20.G584 20.74 17 20.8250 20.9083 20.991 G 21 .0749 21.1582 21.2415 21.3248 21 .4081 21 .4914 21 .5747 2 I .G580 21.7413 2 I .824G 21.9079 21.9912 22.0745 22.1578 22.241 I 22.3244 22.4077 22.4910 22.5743 22.G57G 22.7409 22.8242 22.9075 22.9908 0.3422 0.3394 0.33GI 0.3332 0.3301 0.3270 0.3241 0 .321 I 0.3194 0.31G9 0.3142 0.3119 0.3098 0.3075 0.3045 0.302G 0.3004 0.2982 0.29GG 0.2938 0.2913 0.2891 0.2870 0.2844 0.281G 0 .2800 0.2774 0.2757 0.2735 0.2707 0.2G84 0.2GG3 0.2G41 0.2GI I 0.2589 0.2570 0.2545 0.2530 0.2504 0.2477 0.2454 0.2433 19.5755 I 9.G588 19.742 1 19.8254 19.9087 19.9920 20.0753 20. I 58G 20.2419 20.3252 20.4085 20.4918 20.5751 20.G584 20.7417 20.8250 20.9083 20.991 G 21 .0749 21 .1582 21.2415 21.3248 21 .4081 21 .4914 21.5747 2 I .G580 21.7413 2 I .824G 21 .9079 21.9912 22.0745 22.1578 22.241 I 22.3244 22.4077 22.4910 22.5743 22.G57G 22.7409 22.8242 22.9075 22.9908 0.021G 0.0215 0.0212 0 .0211 0.0207 0.0205 0.0203 0.0200 0.0202 0.0197 0.0195 0.0194 0.0193 0.0191 0 .0187 0.0189 0 .0185 0 .0185 0 .0183 0.0179 0.0178 0.0177 0.0175 0.0171 0 .0171 0.0171 O.OIG7 O.OIG8 O.OIG5 0.0IG3 O.OIGI 0.0159 0.0158 0.0154 0.01 SG 0 .0153 0 .0152 0.0151 0.014G 0.014G 0.0145 0 .0144 19.5755 19.G588 19.7421 19.8254 19.9087 19.9920 20.0753 20. I 58G 20.2419 20.3252 20.4085 20.4918 20.5751 20.G584 20.7417 20.8250 20.9083 20.991 G 21 .0749 21.1582 21.2415 21 .3248 21 .4081 21 .4914 21 .5747 21 .G580 21.7413 21 .824G 21.9079 21.9912 22 0745 22.1578 22.241 I 22.3244 22.4077 22.4910 22.5743 22.G57G 22.7409 22.8242 22.9075 22.9908 8998.5000 8774.0000 8552.1000 8333.2000 81 17.7000 790G.1000 7G98.7000 749G. IOOO 7298.7000 710G.8000 G920.9000 G741.2000 G5G8.0000 G401.3000 G24 I .3000 G087.9000 5941.0000 5800.7000 SGGG.8000 5539.GOOO 5418.9000 5304.7000 5197.0000 5095.3000 4999.3000 4908.4000 4821.8000 4738.GOOO 4G58.3000 4580.7000 450G.3000 443G.5000 4372.9000 431 G.9000 42G9.7000 4231.5000 4202.4000 4180.GOOO 4159.3000 4144.GOOO 4120.5000 4092.2000 19.5755 19.G588 19.7421 19.8254 19.9087 19.9920 20.0753 20. I 58G 20.2419 20.3252 20.4085 20.4918 20.5751 20.G584 20.7417 20.8250 20.9083 20.991 G 21 .0749 21.1582 21.2415 21 .3248 21 .4081 21 .4914 21 .5747 2 I .G580 21.7413 2 I .824G 21.9079 21.9912 22.0745 22.1578 22.241 I 22.3244 22.4077 22.4910 22.5743 22.G57G 22.7409 22.8242 22.9075 22.9908 8998.521 G 8774.0215 8552.1212 8333.221 I 81 17.7207 790G. I 205 7G98.7203 749G. I 200 7298.7202 710G.8197 G920.9195 G741.2194 G5G8.0l 93 G401.3191 G241.3187 G087.9189 5941.0185 5800.7185 SGGG.8183 5539.G 179 5418.9178 5304.7177 5197.0175 5095.3171 4999.3171 4908.4171 4821.81 G7 4738.G I G8 4G58.3 I GS 4580.71 G3 450G.3 I GI 443G.5 I 59 4372.9158 431 G.9154 42G9.7 I 5G 4231.5153 4202.41 52 4180.G 151 4 I 59.3 I 4G 4144.G 14G 4120.5145 4092.2144 23.0741 0.2549 23.0741 0.2409 23.0741 0.0140 23.0741 40G 1.4000 23.0741 40G 1.4140 23.1574 0.2517 23.1574 0.2379 23.1574 0.0138 23.1574 4028.GOOO 23.1574 4028.GI 38 23.2407 0.2502 23.2407 0.23G2 23.2407 0.0140 23.2407 3994.3000 23.2407 3994.3140 23.3240 0.2474 23.3240 0.2338 23.3240 0.013G 23.3240 3958.8000 23.3240 3958.813G 23.4073 0.2455 23.4073 0.2318 23.4073 0.0137 23.4073 3922.3000 23.4073 3922.3137 23.490G 0.2433 23.490G 0.2299 23.490G 0.0134 23.490G 3885.0000 23.490G 3885.0134 23.5739 0 .2402 23.5739 0.2271 23.5739 0.0131 23.5739 3847.1000 23.5739 3847.1 131 23.G572 0 .2377 23.G572 0.2247 23.G572 0.0130 23.G572 3808.8000 23.G572 3808.8130 23.7405 0.2354 23.7405 0.2225 23.7405 0.0129 23.7405 3770.1000 23.7405 3770.1 129 23.8238 0.2331 23.8238 0.2203 23.8238 0.0128 23.8238 3731.1000 23.8238 3731.1 128 23.9071 0.2298 23.9071 0.2175 23.9071 0.0123 23.9071 3G91.8000 23.9071 3G91.8123 23.9904 0.2271 23.9904 0.2150 23.9904 0.0121 23.9904 3G52.2000 23.9904 3G52.2 I 21 24.0737 0 .1804 24.0737 0.1802 24.1570 O.OGG3 24.1570 0.0838 24.2403 0.0193 24.2403 0.0282 24.323G 0.0055 24.323G 0.0095 24.40G9 0.0014 24.40G9 0.0031 24.4902 0.0002 24.4902 0 .0009 (.) 15000 Cl> "' -....: LL ::i 0 c -Cl> .... ca 0:: ~ 10000 0 ii: 5000 Mitchell 100-Yr. Stonn Event Hydrograph & Mitchell 100-Yr. Stonn Event Plus Cross Roads Post-Dev. Minus Pre-Dev. 100-Yr. Stonn Event Hydrograph 0 5 10 15 20 TIME (In Hours) --Michell 100-Yr. Storm Event --Mitchell 100-Yr. Storm Event Plus Cross Roads Post-Dev. Minus Pre-Dev. 25 30 JOB TITLE ==========:=============== Project Date: 3/5/2008 Project Engineer: LARRY BERRY, P .E. Project Title: CROSS ROADS PRE DEVELOPMENT 100 YR STORM EVENT Project comments: CROSS ROADS PRE DEVELOPMENT 100 YR STORM EVENT S/N: Bentley PondPack (10.00.027.00) 6:01 AM Bentley Systems, Inc. 3/7/2008 Table of Contents i Table of Contents ********************** MASTER SUMMARY ********************** Watershed ••.••.• Master Network Summary •..........•. 1. 01 ********************** TC CALCULATIONS ********************* SUBAREA 10 .••... Tc Cales .....•••.......•...•...•... 2.01 ********************** CN CALCULATIONS ********************* SUBAREA 10. . • . • . Runoff CN-Area • . • . . • • • • . . • . . . . • • . • • 3. 01 S/N: Bentley PondPack (10.00.027.00) 6:01 AM Bentley Systems, Inc. 3/7/2008 Type ..•. Master Network Summary ~ame ..•. Watershed Page 1.01 MASTER DESIGN STORM SUMMARY Network Storm Collection: Brazos County Return Event ------------ 2 5 10 25 50 100 Total Depth Rainfall in Type RNF ID -------------------------------------- 4.5000 Synthetic Curve Type III 6.2000 Synthetic Curve Type III 7.4000 Synthetic Curve Type III 8.4000 Synthetic CU1:Ve Type III 9.8000 Synthetic Curve Type III 11.0000 Synthetic Curve Type III MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;) 24hr 24hr 24hr 24hr 24hr 24hr (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Return HYG Vol Qpeak Qpeak Node ID Type Event ac-f t Trun hrs cfs -------------------------------------------------- *OUT 10 JCT 2 .407 12.1618 4.46 *OUT 10 JCT 5 .685 12.1618 7.53 *OUT 10 JCT 10 .894 12.1618 9.77 *OUT 10 JCT 25 1.072 12.1618 11.67 *OUT 10 JCT 50 1.328 12.1618 14.33 *OUT 10 JCT 100 1.550 12.1618 16.62 SUBAREA 10 AREA 2 .407 12.1618 4.46 SUBAREA 10 AREA 5 .685 12.1618 7.53 SUBAREA 10 AREA 10 .894 12.1618 9.77 SUBAREA 10 AREA 25 1.072 12.1618 11. 67 SUB.AREA 10 AREA 50 1.328 12.1618 14.33 SUB.AREA 10 AREA 100 1.550 12.1618 16.62 S/N: Bentley PondPack (10.00.027.00) 6:01 AM Max Max WSEL Pond Storage ft ac-ft -------------------- Bentley Systems, Inc. 3/7/2008 Type .... Tc Cales Name ..•. SUBAREA 10 Page 2.01 ....................................................................................... . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . .. . . . . . . .. . . . . . . . . . . . . TIME OF CONCENTRATION CALCULATOR : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Segment #1: Tc: User Defined S/N: Bentley PondPack (10.00.027.00) Segment #1 Time: .1900 hrs ========================= Total Tc: .1900 hrs Calculated Tc < Min.Tc: Use Minimum Tc .•. Use Tc= .1900 hrs ================= 6:01 AM Bentley Systems, Inc. 3/7/2008 Type .•.. Tc Cales Name .. ,. SUBAREA 10 Tc Equations used ..• Page 2.02 User Defined ====================================================== Tc = Value entered by user Where: Tc = Time of concentration S/N: Bentley PondPack (10.00.027.00} 6:01 AM Bentley Systems, Inc. 3/7/2008 Type .••. Runoff CN-Al:ea Name ..•. SUBAREA 10 RUNOFF CURVE NUMBER DATA Page 3.01 .......................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Soil/Surface Description CN Other Agricultural Lands -Pasture, 75 COMPOSITE AREA & WEIGHTED CN ---> Al:ea acres 2.380 2.380 Impervious Adjustment %C %UC Adjusted CN 75.00 75.00 (75) ............................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S/N: Bentley PondPack (10.00.027.00) 6:01 AM Bentley Systems, Inc. 3/7/2008 Appendix A Index of Starting Page Numbers for ID Names -----s SUBAREA 10 ... 2.01, 3.01 -----w Watershed ... 1.01 S/N: Bentley PondPack (10.00.027.00) 6:01 AM A-1 Bentley Systems, Inc. 3/7/2008 WinTR-55 Current Data Description ---Identification Data --- User: BERRY ENG Date : 3/4/2008 Project: CROSSROADS Units : English SubTitle: Pre Development Conditions Areal Units: Acres State: Texas County: Brazos Filename: <new file> ---Sub-Area Data --- Name Description Reach ONSITE TRB CROSSROADS ONSITE TRIB Outlet Total area: 2 .38 (ac) ---Storm Data Area(ac) 2.38 Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr (in) (in) (in) 4.5 6.13 7.3 Storm Data Source: Rainfall Distribution Type: Dimensionless Unit Hydrograph: WinTR-55, Version 1.00.08 25-Yr (in) 8.75 Brazos County, TX Type III <standard> Page 1 50-Yr (in) 9.75 (NRCS) RCN 75 100-Yr (in) 11. 0 3/4/2008 Tc 0.190 1-Yr (in) 3. 45 2:42:26 PM BERRY ENG CROSSROADS Pre Development Conditions Brazos County, Texas Storm Data Rainfall Depth by Rainfall Return Period 2-Yr {in) 4.5 5-Yr {in) 6.13 Storm Data Source: Rainfall Distribution Type : 10-Yr {in) 7.3 Dimensionless Unit Hydrograph : WinTR-55, Version 1 .00 .08 25-Yr {in) 8.75 Brazos County, TX Type III <standard> Page 1 50-Yr {in) 9.75 {NRCS) 100-Yr (in) 11. 0 3/4/2008 1-Yr {in) 3 . 45 2:42:26 PM BERRY ENG Sub-Area or Reach Identifier SUBAREAS ONSITE TRB REACHES OUTLET · CROSSROADS Pre Development Conditions Brazos County, Texas Watershed Peak Table Peak Flow·by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr (cfs) (cfs) (cfs) (cfs) (cfs) 4 .55 7.55 9.80 12. 61 14 .57 4.55 7.55 9 .80 12.61 14.57 WinTR-55, Version 1 .00.08 Page 1 100-Yr (cfs) 17.02 17.02 3/4/2008 2 :42:26 PM BERRY . ENG Sub-Area or Reach Identifier SUBAREAS Peak 2-Yr (cfs) (hr) CROSSROADS Pre Development Conditions Brazos County, Texas Hydrograph Peak/Peak Time Table Flow and Peak Time (hr) by Rainfall Return Period 100-Yr (cfs) (hr) 5-Yr 10-Yr 25-Yr 50-Yr (cfs) (cfs) (cfs) (cfs) (hr) (hr) (hr) (hr) ONSITE TRB 4.55 7.55 9.80 12.61 14.57 17.02 12.16 12.15 12.15 12.14 12.14 12 .15 REACHES OUTLET 4.55 7 .55 9.80 12.61 14.57 17.02 WinTR-55, Version 1 .00.08 Page 1 3/4/2008 2:42:26 PM BERRY ENG Sub-Area Drainage Identifier Area (ac) ONSITE TRB 2.38 CROSSROADS Pre Development Conditions Brazos County, Texas Sub-Area Summary Table Time of Curve Concentration Number (hr) 0.190 75 Receiving Reach Outlet Total Area: 2.38 (ac) WinTR-55, Version 1.00.08 Page 1 Sub-Area Description CROSSROADS ONSITE TRIB 3/4/2008 2:42 :26 PM BERRY ENG Sub-Area Identifier/ Flow Length (ft) ONSITE TRB User-provided CROSS~OADS Pre Development Conditions Brazos County, Texas Sub-Area Time of Concentration Details Mannings's Slope n (ft/ft) End Area (sq ft) Wetted Perimeter (ft) Velocity (ft/sec) Time of Concentration WinTR-55, Version 1.00.08 Page 1 3/4/2008 Travel Time (hr) 0.190 0.190 2:42:26 PM BERRY ENG CROSSROADS Pre Development Conditions Brazos County, Texas Sub-Area Land Use and Curve Number Details Sub-A.re a Identifier Land Use ONSITE TRBCN directly entered by user Total Area I Weighted Curve Number WinTR-55, Version 1 .00 .08 Page 1 Hydrologic Soil Group Sub-A.re a A.re a (ac) 2 .38 2.38 3/4/2008 Curve Number 75 75 2:42:26 PM =============~======2===== JOB TITLE ========================== Project Date: 3/5/2008 Project Engineer: L.A. BERRY, P.E. Project Title: CROSS ROADS POST DEV. 100 YR. STORM EVENT Project Comments: POST DEVELOPMENT 100 YEAR STORM EVENT S/N: Bentley PondPack (10.00.027.00) 6:07 AM Bentley Systems, Inc. 3/7/2008 Table of Contents i Table of Contents ********************** MASTER SUMMARY ********************** Watershed ••••••• Master Network summary •..•.••••.•.• 1.01 ********************** TC CALCULATIONS ********************* SUB.AREA 10 ...•.. Tc Cales • . . . . • • . • . . • • • • . . . • . • . • • • • • 2. 01 ********************** CN CALCULATIONS ********************* SUBAREA 10. . • • . • Runoff CN-Area • • . • • • • • . • • . • . • • • . • • • 3. 01 S/N: Bentley PondPack (10. 00 .'027. 00) 6:07 AM Bentley Systems, Inc. 3/7/2008 Type •.•• Master Network Sununary Name. . . . Watershed Page 1.01 File •... C:\Documents and Settings\Ken Havel\My Documents\CR POST.ppw MASTER DESIGN STORM SUMMARY Network Storm Collection: Brazos County Return Event ------------ 2 5 10 25 50 100 Total Depth Rainfall in Type RNF ID --------------------------------------4.5000 Synthetic Curve Type III 6. 2000 Synthetic Curve Type III 7.4000 Synthetic Curve Type III 8.4000 synthetic Curve Type III 9.8000 Synthetic Curve Type III 11. 0000 Synthetic Curve Type III MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;} 24hr 24hr 24hr 24hr 24hr 24hr (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt} Return HYG Vol Qpeak Qpeak Node ID Type Event ac-ft Trun hrs cfs -------------------------------------------------- *OUT 10 JCT 2 .757 12.1618 7.73 *OUT 10 JCT 5 1.090 12.1618 10.89 *OUT 10 JCT 10 1.326 12.1618 13.10 *OUT 10 JCT 25 1.523 12.1618 14.94 *OUT 10 JCT 50 1.800 12.1618 17.50 *OUT 10 JCT 100 2.037 12.1618 19.70 SUBAREA 10 AREA 2 .757 12.1618 7. 73 SUBAREA 10 AREA 5 1.090 12.1618 10.89 SUBAREA 10 AREA 10 1.326 12.1618 13.10 SUBAREA 10 AREA 25 1.523 12.1618 14.94 SUBAREA 10 AREA 50 1.800 12.1618 17.50 SUBAREA 10 AREA 100 2.037 12.1618 19.70 S/N: Bentley PondPack (10.00.027.00} 6:07 AM Max Max WSEL Pond Storage ft ac-ft -------------------- Bentley Systems, Inc. 3/7/2008 Type •.•• Tc Cales Name .... SUB.AREA 10 Page 2.01 ........................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TIME OF CONCENTRATION CALCULATOR .................................................................................. . .. .. . . .. . .. . . .. . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . .. .. .. . .. . . . . . . . .. .. . .. .. . .. . .. . . . . . . . . . .. . . Segment #1: Tc: User Defined S/N: Bentley PondPack (10.00.027.00) Segment #1 Time: .1667 hrs ========================= Total Tc: .1667 hrs Calculated Tc < Min.Tc: Use Minimum Tc •.• Use Tc = .1667 hrs 6:07 AM Bentley Systems, Inc. 3/7 /2008 Type ...• Tc Cales Name ..•. SUBAREA 10 Tc Equations used ... Page 2.02 User Defined ====================================================== Tc = Value entered by user Where: Tc = Time of concentration S/N: Bentley PondPack (10.00.027.00) 6:07 AM Bentley Systems, Inc. 3/7/2008 Type ••.. Runoff CN-Area Name •••• SU;i:iAREA 10 RUNOFF CURVE NUMBER DATA Page 3.01 ............................................................................ . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Soil/Surface Description CN Urban Districts -Conunercial & Busi 94 COMPOSITE AREA & WEIGHTED CN ---> Area acres 2.380 2.380 Impervious Adjustment %C %UC Adjusted CN 94.00 94.00 (94) ............................................................................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . S/N: Bentley PondPack (10.00.027.00J 6:07 AM Bentley Systems, Inc. 3/7 /2008 Appendix A Index of Starting Page Numbers for ID Names -----s SUBAREA 10 •.. 2.01, 3.01 -----w ----- Watershed •.. 1.01 S/N: Bentley PondPack (10.00.027.00) 6:07 AM A-1 Bentley Systems, Inc. 3/7/2008 WinTR-55 Current Data Description ---Identification Data --- User : BERRY ENG Date: 3/4/2008 Project: CROSSROADS Units : English SubTitle: Post Development Conditions Areal Units: Acres State: Texas County: Brazos Filename: C:\Documents and Settings\L. A. Berry\Application Data\WinTR-55\CROSSROAD POST.w55 ---Sub-Area Data --- Name Description Reach Area(ac) ONSITE TRB CROSSROADS ONSITE TRIS Outlet 2.38 Total area: 2.38 (ac) ---Storm Data Rainfall Depth by Rainfall Return Period 2-Yr (in) 4.5 5-Yr (in) 6.13 Storm Data Source: Rainfall Distribution Type: 10-Yr (in) 7.3 Dimensionless Unit Hydrograph: WinTR-55 , Version 1.00.08 25-Yr (in) 8 .75 Brazos County, TX Type III <standard> Page 1 50-Yr (in) 9.75 (NRCS) RCN 94 100-Yr (in) 11. 0 3/4/2008 Tc 0.170 1-Yr (in) 3 .45 3:23:00 PM BERRY ENG CROSSROADS Post Development Conditions Brazos County, Texas Storm Data Rainfall Depth by Rainfall Return Period 2-Yr (in) 4.5 5-Yr (in) 6.13 Storm Data Source: Rainfall Distribution Type: 10-Yr (in) 7.3 Dimensionless Unit Hydrograph: WinTR-55 , Version 1.00.08 25-Yr (in) 8.75 Brazos County, TX Type III <standard> Page 1 50-Yr (in) 9 .75 (NRCS) 100-Yr (in) 11. 0 3/4/2008 1-Yr (in) 3. 45 3:23:00 PM BERRY ENG Sub-Area or Reach Identifier SUBAREAS ONSITE TRB REACHES OUTLET CROSSROADS Post Development Conditions Brazos County, Texas Watershed Peak Table Peak Flow by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr (cfs) (cfs) (cfs) ·(cfs) (cfs) 8 .08 11.26 13.52 16.32 18.24 8.08 11.26 13.52 16.32 18 .24 WinTR-55, Version 1 .00.08 Page 1 100-Yr (cfs) 20.63 20.63 3/4/2008 3 :23 :00 PM BERRY ENG Sub-Area or Reach Identifier SUBAREAS Peak 2-Yr (cfs) (hr) CROSSROADS Post Development Conditions Brazos County, Texas Hydrograph Peak/Peak Time Table Flow and Peak Time (hr) by Rainfall Return Period 100-Yr (cfs) (hr) 5-Yr 10-Yr 25-Yr 50-Yr (cfs) (cfs) (cfs) (cfs) (hr) (hr) (hr) (hr) ONSITE TRB 8.08 11.26 13.52 16.32 18.24 20.63 12.13 12.13 12.13 12.13 12.13 12.13 REACHES OUTLET 8.08 11. 26 13.52 16.32 18.24 20.63 WinTR-55, Version 1.00.08 Page 1 3/4/2008 3:23:00 PM BERRY ENG Sub-Area Identifier ONSITE TRB Total Area: Drainage Area (ac) 2.38 CROSSROADS Post Development Conditions Brazos County, Texas Sub-Area Summary Table Time of Concentration (hr) 0.170 Curve Number 94 Receiving Reach Outlet 2 .38 (ac) WinTR-55, Version 1.00.08 Page 1 Sub-Area Description CROSSROADS ONSITE TRIB 3/4 /2008 3:23:00 PM BERRY ENG Sub-Area Identifier/ Flow Length (ft) ONSITE TRB Use.r-prov ided CROSSROADS Post Development Conditions Brazos County, Texas Sub-Area Time of Concentration Details Mannings 's Slope n (ft/ft) End Area (sq ft) Wetted Perimeter (ft) Velocity (ft/sec) Time of Concentration WinTR-55, Version 1 .00.08 Page 1 3/4/2008 Travel Time (hr) 0 .170 0 .170 3 :23 :00 PM BERRY ENG CROSSROADS Post Development Conditions Brazos County, Texas Sub-Area Land Use and Curve Number Details Sub-Area Identifier Land Use ONSITE TRBCN directly entered by user Total Area I Weighted Curve Number WinTR-55, Version 1.00.08 Page 1 Hydrologic Soil Group Sub-Area Area (ac) 2.38 2.38 3/4/2008 Curve Number 94 94 3:23:00 PM