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T:1074211406\June11 CityApp\Surface Water\ <br />ER Landfill 06_2011-dead storage affect Type 11 24-hr 25 yr Rainfall=4.70" <br />Prepared by Wenck Associates, Inc. Printed 8/15/2011 <br />HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Page 18 <br />Summary for Subcatchment 11:11 <br />Runoff = 10.23 cfs @ 11.98 hrs, Volume= 0.489 af, Depth= 2.63" <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 25 yr Rainfall=4.70" <br />Area (sfl CN Description <br />97,074 80 side of Landfill <br />97,074 100.00% Pervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />0.1 55 9.00 Direct Entry, <br />6.2 750 2.00 Direct Entrv. <br />6.4 805 Total <br />Subcatchment 11: 11 <br />Hydrograph <br />11 ~ 10.3 <br /> 10 _ _' <br /> 9 <br />_ _ _. <br /> 8 <br /> <br />,~ <br />7 , - <br />~ -- <br /> 6 <br />3 --- _ <br />0 5 <br />,~ , - - <br />i <br />,__ ~ ~ , <br />_- - _. <br />CfS ~ '_ . ~ Runoff <br />- ~-- - - ~ -- 1-- ~- -1 <br />-~ ~- -- L <br />Type' 1124-h r 25 y r <br />~' ~ '~ ~ ~ Rainfall=4.70" <br />'~ ~ '~ Runoff Area=97 074 'sf <br />j Runoff Volume=0.4$9 of <br />_~ <br />Runoff Depth=2.63" <br />- - -_ - _-__-- -FI --,- ;---, - --_-~ , <br />_ -, ~ ow Length=805. <br />_ _~ ~ - ,_ _ ___ -I;---,, --I------ <br />Tc=6.4 min <br />CN=80 <br />i ~ ~ ~ I ~ ~, <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 />