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HomeMy WebLinkAboutApplication Files_82693_pg0568 72189 PR Type IIi 24-hr 25-Year Storm Rainfall=5.50" Prepared by{enter your company name here} Printed 5/31/2011 ---- ---HydroCAD®910 s/n-01237 U 2009 HydroCA€?Software Solutions LLC Page 1 -- -- -- Summary for Subcatchment PR1 B: Ellington Road Access Drive & Existing Depression Runoff - 4.74 afs @ 12.10 hrs, Volume= 0.349 af, Depth= 2.24" ' 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" Area(sf) CN Description * 15,224 98 Impervious * 11,264 98 Water Surface 25,385 69 50-75% Grass cover, Fair, HSG B 10,328 35 Brush, Fair, HSG A 8,272 '36 Woods, Fair, HSG A 5,258 61 >75% Grass cover,Good, HSG B 5,665 39 >75% Grass cover, Good, HSG A 81,396 68 Weighted Average 54,908 67.46% Pervious Area 26,488 32.54% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Min.Tc=6.0