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IVY PLACE - EXISTING CONDITIONS <br /> 17059 - IVY PLACE - EXISTING Type II 24-hr 10-YEAR Rainfall=4.24" <br /> Prepared by {enter your company name here} Printed 10/18/2017 <br /> HydroCAD® 10.00-20 s/n 02202 ©2017 HydroCAD Software Solutions LLC Page 14 <br /> Summary for Subcatchment EX 2: EXISTING DRAINAGE AREA 2 <br /> Runoff = 3.59 cfs @ 12.02 hrs, Volume= 0.194 af, Depth> 2.24" <br /> Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs <br /> Type II 24-hr 10-YEAR Rainfall=4.24" <br /> Area (sf) CN Description <br /> 302 98 Paved parking, HSG D <br /> 45,025 80 >75% Grass cover, Good, HSG D <br /> 45,327 80 Weighted Average <br /> 45,025 99.33% Pervious Area <br /> 302 0.67% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 10.0 Direct Entry, <br /> Subcatchment EX 2: EXISTING DRAINAGE AREA 2 <br /> Hydrograph <br /> 4 ā¯‘Runoff <br /> 13.59 cfs I <br /> Type II 24-hr <br /> 10-YEAR Rainfall=4.24" <br /> 3 Runoff Area=45,327 sf <br /> Runoff Volume=0.194 af J <br /> Runoff Depth>2.24" <br /> LL <br /> 2 Tc=10.0 min P <br /> CN=80 <br /> 1 % <br /> 0 <br /> 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 <br /> Time (hours) <br />