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Home My WebLink AboutApplication Files_82693_pg0739 72189 PR Type III 24-hr 25-Year Storm Rainfall=5.50" Prepared by{enter your company name here} Printed 7/26/2011 HydroCAD®9.10 s/n 01237 ©2009 HydroCAD Software Solutions LLC Page 62 Tc Length Slope Velocity Capacity Description (min) (feet) ^(ftlft) (ft/sec) (cfs) 6.0 Direct Entry, Min.Tc=6.0 Summary for Subcatchment PR1 L: Roadway in front of Studio 3 Runoff = 1.13 cfs @ 12.09 hrs, Volume= 0.094 af, Depth= 5.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0A0-72.00 hrs, dt=0.05 hrs Type III 24-hr 25-Year Storm Rainfall=5.50" Areas CN Description 9,344 98 Impervious - 9,344 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ftift ft/sec cfs 6.0 Direct Entry, Min:Tc=6.0 Summary for Subcatchment PRIM: Majority of Site Runoff = 74.40 cfs @ 12.09 hrs, Volume= 5.930 af, Depth= 4.92" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Type III 24-hr 25-Year Storm Rainfall=5.50" 1 Area (sf) CN Description 18,680 39 >75% Grass cover, Good, HSG A 19,911 61 >75% Grass cover, Good, HSG B 592,094 98 Impervious 630,685 95 Weighted Average 38,591 6.12% Pervious Area 592,094 93.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Min. Tc=6.0 Summary for Subcatchment PR2: Offsite Chapel Road Runoff = 1.30 cfs @ 12.10 hrs, Volume= 0.098 af, Depth= 1.91" Runoff by SCS TR-20 method, UH=SCS, Time Span=0.00-72.00 hrs, dt= 0.05 hrs Type Ill 24-hr 25-Year Storm Rainfall=5.50"