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SWB -2 Peak Discharge 100YR 14NOV12.txt <br />Graphical Peak Discharge Wed Nov 14 16:43:22 2012 <br />Project: SWB -2 By: B Langenfeld Date: 11/14/12 <br />Location: Revenue Mine Checked: Date: <br />Developed <br />1. Data: <br />Drainage area: .................... A = 6.9637ACres <br />Runoff Curve Number: ............. CN = 74 <br />Time of concentration: ........... TC = 0.11 <br />Page 1 <br />Storm Type: ....................... = <br />II <br />Pond and swamp areas spread <br />throughout watershed ............... = <br />0.00 percent of A <br />0.0000 Acres <br />2. <br />Frequency ........................yr = <br />100 <br />3. <br />Rainfall ,P(24 - hour) .............. in = <br />3.20 <br />4. <br />Initial abstraction, Ia............ = <br />0.7027 <br />5. <br />Compute Ia /P ....................... = <br />0.2196 <br />6. <br />Unit peak discharge, qu ...... csm /in = <br />938.49 <br />7. <br />Runoff ,Q .........................in = <br />1.0375 <br />8. <br />Pond & swap adjustment factor .... Fp = <br />1.00 <br />9. <br />Peak Discharge,gp ...............cfs = <br />10.5949 <br />Page 1 <br />