14-020_TentPUD_Completeness_2017-0807_PostDev 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 20 <br />Summary for Pond S9: 816 FOR 10 YEAR <br />Inflow Area = 0.689 ac, 29.10% Impervious, Inflow Depth = 2.93" for 10 yr event <br />Inflow = 0.23 cfs @ 8.00 hrs, Volume= 0.168 of <br />Outflow = 0.13 cfs @ 10.19 hrs, Volume= 0.168 af, Atten= 45%, Lag= 131.5 min <br />Primary = 0.13 cfs @ 10.19 hrs, Volume= 0.168 of <br />Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs <br />Peak Elev= 892.55' @ 10.27 hrs Surf.Area= 134 sf Storage= 711 cf <br />Plug-Flow detention time= 67.3 min calculated for 0.168 of (100% of inflow) <br />Center-of-Mass det. time= 67.3 min ( 889.4 - 822.2) <br />Volume Invert Avail.Storage Storage Description <br />#1 887.25' 871 cf Custom Stage Data (Prismatic) Listed below (Recalc) <br />Elevation Surf.Area Inc.Store Cum.Store <br />(feet) (sq-ft) (cubic-feet) (cubic-feet) <br />887.25 134 0 0 <br />893.75 134 871 871 <br />Device Routing Invert Outlet Devices <br />#1 Primary 887.25' 8.0" Round Culvert <br />L= 20.0' CMP, square edge headwall, Ke= 0.500 <br />Inlet / Outlet Invert= 887.25'/ 886.85' S= 0.02007' Cc= 0.900 <br />n= 0.010 PVC, smooth interior, Flow Area= 0.35 sf <br />#2 Device 1 887.25' 1.5" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads <br />#3 Device 1 893.25' 8.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads <br />Primary OutFlow Max=0.13 cfs @ 10.19 hrs HW=892.55' TW=887.99' (Dynamic Tailwater) <br />L1=Culvert (Passes 0.13 cfs of 3.59 cfs potential flow) <br />~2=Orif i ce/G rate (Orifice Controls 0.13 cfs @ 10.29 fps) <br />3=Orifice/Grate ( Controls 0.00 cfs) <br />