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T:\0742\1406Wune11 CityApp\Surface Water\ <br />ER Landfill 06_2011-dead storage affect Type Il 24-hr 100 yr Rainfall=5.90" <br />Prepared by Wenck Associates, Inc. Printed 8/15/2011 <br />HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Page 47 <br />Summary for Subcatchment 1 B: 1 B <br />Runoff = 42.97 cfs @ 12.04 hrs, .Volume= 2.549 af, Depth= 3.39" <br />Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-96.00 hrs, dt= 0.02 hrs <br />Type II 24-hr 100 yr Rainfall=5.90" <br />Area (sf) CN Description <br />392,876 77 Top of Landfill <br />392,876 100.00% Pervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />8.5 510 1.00 Direct Entry, <br />4.0 600 2.50 Direct Entrv, <br />12.5 1,110 Total <br />Subcatchment 1 B: 1 B <br />Hydrograph <br />' Q Runoff <br />45 42.97 cfs - - - <br />- - - ; - - - ~ - - - - ~ - -Type-I~ -2?~~ r 1-00 y-r- - <br />--~ <br />R •~ <br />40 ~ ~ _ _ ; _ ~.. aanfa - <br />_ - _ . ~' ~ 11=x._90"- <br />_ ; _. ;_ <br />`- - _~_ <br />35 <br />_ _ Runoff Area=392 876sf '~ <br />30 ~ Runoff Volume=2.549 of <br />25 - ~ Runoff Depth=3.39" r <br />3 _ - - - ~ - ,' --_- - ~ ~, <br />0 20 - Flow Length 1;'I 1-0' , <br />- ~ ~-~ Tc=12:5~min <br />15 <br />C N 77 ' <br />10 <br />_ _, <br />5 <br />. ~ ~ ~ ~ , <br />0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 <br />Time (hours) <br />