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HomeMy WebLinkAboutApplication Files_85048_pg0202 i i PRE-DEVELOPMENT DRAINAGE 2007-058 Jones-PRE Type 11124hr 900 year Rainfall=6.90" Prepared by J.R. Russo &Associates Printed 12/11/2010 HydroCADS 8.50 s/n 002386 ©2007 HvdroCAD Software Solutions LLC Page 12 Time span=1.00-72.00 hrs, dt=0.01 hrs, 7101 points i Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: To Sullivan Avenue West Runoff Area=38.320 ac 3.99% Impervious Runoff Depth=3.96" Flow Length=1,787' Tc=84.5 min CN=74 Runoff=56.16 cfs 12.630 of Subcatchment 1S: Sullivan Ave Drainage Runoff Area=1.970 ac 86.29% Impervious Runoff Depth=6.07" iFlow Length=1,500' Tc=35.9 min CN=93 Runoff=6.80 cfs 0.997 of Subcatchment 2: To Sullivan Ave East Runoff Area=4.470 ac 4.47% Impervious Runoff Depth=3.13" Flow Length=1,455' Tc=43.9 min CN=66 Runoff=7.62 cfs 1.164 of iSubcatchment 2S: Sullivan Ave Drainage Runoff Area=4.160 ac 86.54% Impervious Runoff Depth=6.07" Flow Length=2,450' Tc=11.8 min CN=93 Runoff=22.67 cfs 2.105 of rSubcatchment 3S: Rear of Red Star Runoff Area=8.170 ac 41.25% Impervious Runoff Depth=3.96" Flow Length=550' Tc=6.8 min CN=74 Runoff=36.85 cfs 2.693 of iSubcatchment 6S: Sullivan Ave to CB Runoff Area=0.310 ac 100.00% Impervious Runoff Depth>6.66" Tc=5.0 min CN=98 Runoff=2.17 cfs 0.172 of Subcatchment 20: To DP#2 Runoff Area=18.070 ac 8.69% Impervious Runoff Depth=2.15" Flow Length=1,200' Tc=66.8 min CN=56 Runoff--I 5.62 cfs 3.243 of i Reach 3R: Basin to MH Avg. Depth=0.62' Max Vet=4.18 fps Inflow=2.90 cfs 1.192 of D=18.0" n=0.012 L=1,250.0' S=0.0050 '/' Capacity=8.05 cfs Outflow=2.90 cfs 1.192 of Pond DPI: Design Point#1 Peak Elev=95.52' Inflow=55.16 cfs 17.060 of 24.0"x 234.0' Culvert Outflow=55.16 cfs 17.060 of Pond DP2: Design Point#2 Inflow=15.62 cfs 3.243 of Primary=15.62 cfs 3.243 of Pond MH: Existing MH Peak EIev=90.83' Inflow=55.02 cfs 16.888 of r24.0"x 50.0' Culvert Outflow=55.02 cfs 16.888 of Pond P1: ON-SITE AREA DRAIN Peak EIev=82.86' Storage=36,985 cf Inflow=56.16 cfs 12.630 of Discarded=6.81 cfs 1.200 of Primary=45.58 cfs 11.430 of Outflow=52.39 cfs 12.630 of iPond IRS: Red Star Basin Peak EIev=86.49' Storage=41,908 cf Inflow=36.85 cfs 2.693 of Discarded=3.09 cfs 1.501 of Primary=2.90 cfs 1.192 of Outflow=5.91 cfs 2.693 of i r i i