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DITCH C-12 BASIN 25 <br />Time of Concentration (SCS Method) 08/07/1999 <br />Curve Number: 87 <br />Length of Flow (ft): 1926.16 <br />Average Land Slope Q: 4 <br />Time of Concentration (hrs): 0.35 <br />08/07/1999 <br />Graphical Peak Discharge <br />Project: AMENDMENT By: GL Date: 08/07/99 <br />Location: DITCH C-12 Checked: Date: <br />Developed <br />1. Data: <br />Drainage area :....................A = 19.6000 Acres <br />Runoff Curve Number :.............CN = 87 <br />Time of Concentration:...........Tc = 0.35 <br />• Pond and swamp areas spread throughout watershed. = 5.00 percent of A <br />0.9800 Acres <br />2. Frequency ........................yr = 10 <br />3. Rainfall,P(24-hour) ..............in = 2.00 <br />4. Initial abstraction, la............ = 0.2989 <br />5. Compute la/P ....................... = 0.1494 <br />6. Unit peak discharge, qu......csm/in = 613.82 <br />7. Runoff,Q .........................in = 0.9056 <br />8. Pond & swap adjustment factor,...Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs = 12.7684 <br />u <br />(Revised izioo) Attachment 2.05.3(3) -10-81 <br />