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• DITCH C-9 BASIN 14 <br />Time of Concentration (SCS Method) <br /> <br />08/07/1999 <br />Curve Number: 83 <br />Length of Flow (ft): 2635.18 <br />Average Land Slope Q: 12.4 <br />Time of Concentration (hrs): 0.30 <br />Graphical Peak Discharge <br />Project: AMENDMENT By: GL <br />Location: DITCH C-9 Checked: <br />08/07/1999 <br />Developed <br />1. Data: <br />Drainage area :....................A = 22.7000 Acres <br />Runoff Curve Number :.............CN = 83 <br />Time of Concentration:...........Tc = 0.30 <br />Date: 08/07/99 <br />Date: <br />Pond and swamp areas spread throughout watershed= 5.00 percent of A <br /> 1.1350 Acres <br />2. Frequency .................. ......yr = 10 <br />3. Rainfall,P(24-hour) ..... .........in = 2.00 <br />4. Initial abstraction. la... ......... = 0.4096 <br />5. Compute la/P ....................... = 0.2048 <br />6. Unit peak discharge, qu......csm/in = 630.60 <br />7. Runoff,Q .........................in = 0.6951 <br />8. Pond & swap adjustment factor,...Fp = 0.72 <br />9. Peak Discharge,gp ...............cfs = 11.1942 <br />• (REVISED(4-30-02) Attachment 2.05.3(3)-1- 16 <br />