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Stormwater calculations
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Last modified
4/16/2026 2:53:19 PM
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4/16/2026 2:52:57 PM
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Hydrograph Report <br />Hyd. No. 1 <br />PRE: AREA 1 <br />Hydrograph type <br />Storm frequency <br />Drainage area <br />Basin Slope <br />Tc method <br />Total precip. <br />Storm duration <br />= SCS Runoff <br />= 100 yrs <br />= 5.16 ac <br />= 10.7 % <br />= LAG <br />= 5.90 in <br />= 24 hrs <br />Hydrograph Discharge Table <br />Time -- Outflow <br />(hrs cfs) <br />11,93 10.97 <br />12.00 13.63 << <br />12.07 11.11 <br />End <br />Peak discharge <br />Time interval <br />Curve number <br />Hydraulic length <br />Time of conc. (Tc) <br />Distribution <br />Shape factor <br />Page 1 <br />English <br />= 13.63 cfs <br />4 min <br />61 <br />470 ft <br />8.9 min <br />Type 11 <br />484 <br />Total Volume = 34,047 cult <br />
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