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• DITCH C-8 BASIN 9 <br />Time of Concentration (SCS Method) 08/07/1999 <br />Curve Number: 87 <br />Length of Flow (ft): 1995.58 <br />Average Land Slope Q: 13.2 <br />Time of Concentration (hrs): 0.20 <br />08/07/1999 <br />• <br />Graphical Peak Discharge <br />Project: AMENDMENT <br />Location: DITCH C-8. <br />Developed <br />1. Data: <br />Drainage area:... <br />Runoff Curve Number: <br />CN=87 <br />Time of Concentration:...........Tc = 0.20 <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 = 775.29 <br />7. Runoff,Q ........................ .in = 0.9056 <br />8. Pond & swap adjustmen t factor,...Fp = 0.75 <br />9. Peak Discharge,gp ........ .......cfs = 12.5891 <br />Pond and swamp areas spread throughout watershed. = 5.00 percent of A <br />0.7650 Acres <br />2. Frequency ........................yr = 10 <br />By: GL Date: 08/07/99 <br />Checked: Date: <br />.......A = 15.3000 Acres <br />• (REVISED(4-30-02) Attachment 2.05.3(3)-1- 15 <br />