14-020_TentPUD_Completeness_2017-0807_PreDev Type IA 24-hr 10 yr Rainfall=4.46" <br />Prepared by Microsoft Printed 8/11/2017 <br />HydroCADO 10.00-16 s/n 09344 © 2015 HydroCAD Software Solutions LLC Page 3 <br />Area (sf) CN Descriotion <br />2,095 <br />98 Pavement <br />10,625 <br />80 Landscape <br />12,720 <br />83 Weighted Average <br />10,625 <br />83.53% Pervious Area <br />2,095 <br />16.47% Impervious Area <br />Tc <br />Length <br />Slope <br />Velocity <br />Capacity Description <br />(min) <br />(feet) <br />(ft/ft) <br />(ft/sec) <br />(cfs) <br />0.3 <br />20 <br />0.0300 <br />1.16 <br />Sheet Flow, <br />Smooth surfaces n= 0.011 P2= 3.12" <br />8.3 <br />90 <br />0.1800 <br />0.18 <br />Sheet Flow, <br />Woods: Liaht underbrush n= 0.400 P2= 3.12" <br />8.6 110 Total <br />Summary for Subcatchment E4: Existing SW Basin to West Gutter <br />Runoff = 0.38 cfs @ 8.00 hrs, Volume= 0.138 af, Depth= 2.34" <br />Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-36.00 hrs, dt= 0.01 hrs <br />Type IA 24-hr 10 yr Rainfall=4.46" <br />Area (sf) CN Description <br />30,885 79 Woods, Fair, HSG D <br />30,885 100.00% Pervious Area <br />Tc <br />Length <br />Slope <br />Velocity <br />Capacity Description <br />(min) <br />(feet) <br />(ft/ft) <br />(ft/sec) <br />(cfs) <br />7.0 <br />175 <br />0.1450 <br />0.41 <br />Sheet Flow, Sheet Flow <br />Grass: Short n=0.150 P2=3.12" <br />0.1 <br />25 <br />0.0800 <br />5.74 <br />Shallow Concentrated Flow, <br />Paved Kv= 20.3 fps <br />1.1 <br />300 <br />0.0800 <br />4.39 <br />0.44 Channel Flow, Gutter Flow <br />Area= 0.1 sf Perim= 2.0' r= 0.05' <br />n= 0.013 Asphalt, smooth <br />8.2 500 Total <br />Summary for Reach D1: Existing Ditch <br />Inflow Area = 0.292 ac, 16.47% Impervious, Inflow Depth = 2.72" for 10 yr event <br />Inflow = 0.19 cfs @ 7.99 hrs, Volume= 0.066 of <br />Outflow = 0.19 cfs @ 8.00 hrs, Volume= 0.066 af, Atten= 0%, Lag= 0.2 min <br />Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs <br />Max. Velocity= 0.63 fps, Min. Travel Time= 1.3 min <br />Avg. Velocity = 0.33 fps, Avg. Travel Time= 2.6 min <br />Peak Storage= 15 cf @ 8.00 hrs <br />Average Depth at Peak Storage= 0.21' <br />Bank-Full Depth= 0.50' Flow Area= 1.0 sf, Capacity= 1.01 cfs <br />