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T:\0742\1406\June11 CityApp\Surface Water\ <br />ER Landfill 06_2011 Type ll 24-hr 25 yr Rainfall=4.70" <br />Prepared by Wenck Associates, Inc. Printed 8/2/2011 <br />HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Paae 42 <br />Summary for Pond SW-pipe: SW culvert <br />[57] Hint: Peaked at 1,030.27' (Flood elevation advised) <br />[61] Hint: Exceeded Reach DS1-L outlet invert by 0.21' @ 12.00 hrs <br />Inflow Area = 21.014 ac, 0.00% Impervious, Inflow Depth = 2.51" for 25 yr event <br />Inflow = 76.98 cfs @ 12.00 hrs, Volume= 4.395 of <br />Outflow = 76.98 cfs @ 12.00 hrs, Volume= 4.395 af, Atten= 0%, Lag= 0.0 min <br />Primary = 76.98 cfs @ 12.00 hrs, Volume= 4.395 of <br />Routing by Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.02 hrs <br />Peak Elev= 1,030.27' @ 12.00 hrs <br />Device Routing Invert Outlet Devices <br />#1 Primary .996.00' 24.0" Round Culvert <br />L= 90.0' RCP, mitered to conform to fill, Ke= 0.700 <br />Inlet /Outlet Invert= 996.00' / 994.00' S= 0.0222 '/' . Cc= 0.900 <br />n= 0.011 Concrete pipe, straight & clean <br />Primary OutFlow Max=76.71 cfs @ 12.00 hrs HW=1,030.03' (Free Discharge} <br />L1=Culvert (Inlet Controls 76.71 cfs @ 24.42 fps) <br />Pond SW-pipe: SW culvert <br />Hydrograph <br />80 76.98 <br />_, <br />70 _ <br />__ <br />60_ __ <br />-; <br />.-. <br />50 - - <br />v <br />0 40 - - <br />_ , <br />"30 _~; <br />20 <br />10 <br />0 <br />~] Inflow <br />[] Primary <br />0 5 1015 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 <br />Time (hours) <br />