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Freeboard: 0.30 feet <br />DITCH C26 <br />Time of Concentration (SCS Method) <br />Curve Number: 84 <br />Length of Flow (ft): 1484 <br />Average Land Slope (percent): 4.96 <br />Time of Concentration (hrs): 0.29 <br />DITCH C26 <br />Graphical Peak Discharge <br />Project: NUCLA MINE By: B. Langenfeld Date: 05/26/09 <br />Location: DITCH C26 Checked: Date: <br />Present <br />1. Data: <br />Drainage area: .................... A = 42.0226 Acres <br />Runoff Curve Number: ............. CN = 84 <br />Time of Concentration: ........... Tc = 0.29 <br />Storm Type: ....................... = II <br />Pond and swamp areas spread <br />throughout watershed ............... = 0.00 percent of A <br />0.0000 Acres <br />2. Frequency ........................yr = 10 <br />3. Rainfall ,P(24 - hour) .............. in = 2.00 <br />4. Initial abstraction, la............ = 0.3810 <br />5. Compute la /P ....................... = 0.1905 <br />6. Unit peak discharge, qu ...... csm /in = 647.55 <br />7. Runoff ,Q .........................in = 0.7439 <br />8. Pond & swap adjustment factor .... Fp = 1.00 <br />9. Peak Discharge,gp ...............cfs = 31.6289 <br />Revised June 2011 (TR -60) Attachment 2.05.3(3) -1 -44 <br />