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<br /> 3850 Watertown Road
<br /> 3850 Watertown Road Type 112�4-hr 90-YR Rainfal1=4.25"
<br /> Prepared by Sunde Engineering, PLLC. Printed 1/6/2015
<br /> HydroCAD�10.00 s/n 02350 B 2013 HvdroCAD Software Solutions LLC Paae 5
<br /> Volume Invert Avail.Stora9e Storaqe Description
<br /> #1 995.80' 739,346 cf Custom Stage Data(Prismatic�isted below (Recalc)
<br /> Elevation Surf.Area Inc.Store Cum.Store
<br /> (feet) (sq-ft) (cubic feet) {cubio-feet)
<br /> 995.80 4,306 0 0
<br /> 996.00 5,125 943 943
<br /> 998.00 32,539 37,664 38,6Q7
<br /> 1,000.00 97,056 129,595 168,202
<br /> 1,002.00 136,204 233,26U 4Q1,462
<br /> 1,004.00 201,680 337,884 739,346
<br /> Device Routin Invert Outlet Devices
<br /> #1 Primary 1,003.00' 150.0' long x 3.0' breadth EOF-Over Watertown Road
<br /> Hesd (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1,40 1.6Q 1.80 2.00
<br /> 2.50 3.00 3.50 4.00 4.50
<br /> Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.fi8 2.68
<br /> 2.72 2.89 2.92 2.97 3.07 3.32
<br /> Qrimary OutFlow Max=0.00 cfs @ 0.00 hrs HW=995.95' {Free Discharge)
<br /> L1GEOF-Over Watertown Road{ Controls 0.00 cfs}
<br /> Summary for Pond 2P: Existing with Draintile
<br /> Inflow Area = 20.569 ac, 8.49�o Impervious, Inflow Depth = 1.64" for 10-YR event
<br /> Inflow = 36.33 cfs Q 12.14 hrs, Volume= 2.807 af
<br /> putflow = 0.01 cfs aQ 24.77 hrs, Volume= 0.045 af, Atten= 100%, Lag= 758.0 min
<br /> Dlscarded = 0.01 cfs cQ 24.77 hrs, Volume= 0.045 af
<br /> Primary = 0.00 cfs (a� 0.00 hrs, Voiume= 0.000 af
<br /> Routing by Stor-Ind method,Time Span=0.00-72.00 hrs, dt= G.US hrs
<br /> Starting Elev= 995.95' SurF.Area=4,920 sf Storage=692 cf
<br /> Peak Elev=999.49' Q 24.77 hrs Surf.Area=80,474 sf Storage= 122,575 cf (121,883 cf above start)
<br /> Plug-Flow detention tim� 2,497.6 min ca�ulated far 0.030 af(196 of inflaw)
<br /> Center-of-Mass det. time= 1,673.4 min( 2,53�4.2-860.9 )
<br /> Volume Invert Avail.Storaqe Storage Description
<br /> #1 995.80' 739,346 cf Custom Stage Data(P�ismatic)Listed below (Recalc)
<br /> Elevatlon Surf.Area 1nc.Store Cum.Store
<br /> (feet) (sq-ft) (cubic-feet) (cubic-feet)
<br /> 995.80 4,306 0 0
<br /> 996.00 5,125 943 943
<br /> 998.00 32,539 37,664 38,607
<br /> 1,000.40 97,056 129,595 'f 68,202
<br /> 1,002.00 136,204 233,260 409,462
<br /> 1,004.00 201,680 337,884 739,346
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