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MSE 24-hr 3 2-Year Rainfall=2.81"2039 Proposed (1-3-2023) <br /> Printed 1/3/2023Prepared by Plowe Engineering, Inc. <br />Page 6HydroCAD® 10.00-24 s/n 01574 © 2018 HydroCAD Software Solutions LLC <br />Routing by Dyn-Stor-Ind method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs <br />Peak Elev= 862.08' @ 13.72 hrs Surf.Area= 9,144 sf Storage= 2,934 cf <br />Flood Elev= 864.90' Surf.Area= 13,937 sf Storage= 34,909 cf <br />Plug-Flow detention time= 278.6 min calculated for 12,303 cf (99% of inflow) <br />Center-of-Mass det. time= 270.1 min ( 1,442.5 - 1,172.4 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 861.75' 51,375 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 />861.75 8,750 0 0 <br />863.00 10,250 11,875 11,875 <br />864.00 12,250 11,250 23,125 <br />866.00 16,000 28,250 51,375 <br />Device Routing Invert Outlet Devices <br />#1 Primary 861.30'15.0" Round EXISTING MH TO POND L= 61.0' Ke= 0.500 <br />Inlet / Outlet Invert= 861.30' / 860.43' S= 0.0143 '/' Cc= 0.900 n= 0.025, Flow Area= 1.23 sf <br />#2 Device 1 861.75'15.0" Round PIPE TO EXISTING MH L= 15.0' Ke= 0.500 Inlet / Outlet Invert= 861.75' / 861.65' S= 0.0067 '/' Cc= 0.900 <br />n= 0.012, Flow Area= 1.23 sf <br />#3 Device 2 861.75'5.0" W x 36.0" H Vert. ORIFICE C= 0.600 <br />#4 Device 2 863.90'5.0' long TOP OF WALL 2 End Contraction(s) <br />Primary OutFlow Max=0.25 cfs @ 13.72 hrs HW=862.08' (Free Discharge) <br />1=EXISTING MH TO POND (Passes 0.25 cfs of 1.75 cfs potential flow) <br />2=PIPE TO EXISTING MH (Passes 0.25 cfs of 0.39 cfs potential flow) <br />3=ORIFICE (Orifice Controls 0.25 cfs @ 1.84 fps) <br />4=TOP OF WALL ( Controls 0.00 cfs)