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SWB -1 100YR Graphical Peak Discharge.txt <br />Graphical Peak Discharge Thu Jan 10 14:33:07 2013 <br />Project: SWB -1 By: B Langenfeld Date: 01/10/13 <br />Location: Revenue Mine Checked: Date: <br />Present <br />1. Data: <br />Drainage area: .................... A = 22.6480Acres <br />Runoff curve Number: ............. CN = 76 <br />Time of concentration: ........... Tc = 0.17 <br />Storm Type: ....................... = II <br />Pond and swamp areas spread <br />throughout watershed ............... = 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 />= 0.6316 <br />5. <br />Compute Ia /P ....................... <br />= 0.1974 <br />6. <br />unit peak discharge, qu ...... csm /in <br />= 803.92 <br />7. <br />Runoff ,Q .........................in <br />= 1.1520 <br />8. <br />Pond & swap adjustment factor .... Fp <br />= 1.00 <br />9. <br />Peak Discharge,gp ...............cfs <br />= 32.7731 <br />Page 1 <br />