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Inverts <br />Inlet Invert Elevation: 5587.800 ft <br />Outlet Invert Elevation: 5579.500 ft <br />Length: 60.000 ft <br />Slope: 13.83 % <br />Culvert Calculation <br />Discharge: <br />5.08 cfs <br />Headwater Elevation: <br />5589.000 ft <br />Tailwater Elevation: <br />5578.000 ft <br />Downstream Velocity: <br />9.67 ft/s <br />Downstream Flow Depth: <br />0.554 ft <br />CULVERT 131 <br />Subdrainage Area - Graphical Peak Discharge <br />1. Data: <br />Drainage area: .................... A = 6.7800 Acres <br />Runoff Curve Number: ............. CN = 83 <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 />2. Frequency ........................yr = 25 <br />3. Rainfall,P(24-hour).............. in = 2.40 <br />4. Initial abstraction, la............ = 0.4096 <br />5. Compute la/P....................... = 0.1707 <br />6. Unit peak discharge, qu...... csm/in = 815.69 <br />7. Runoff,Q.........................in = 0.9809 <br />8. Pond & swap adjustment factor .... Fp = 1.00 <br />9. Peak Discharge,gp...............cfs = 8.4765 <br />Revised June 2011 (TR -60) Attachment 2.05.3(3)-1-81 <br />