PERMFILE113314

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 7/30/2007
• Doc Name: Collection/Diversion Ditches and Culverts Design Parameters
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-1
• Media Type: D
• Archive: Yes

• 2. Frequency ........................yr = 10
3. Rainfall,P(24-hour) ..............in = 2.00
4. Initial abstraction, la............ = 0.3529
5. Compute la/P ....................... = 0.1765
6. Unit peak discharge, qu......csm/in = 608.66
7, Runoff,Q .........................in = 0.7951
8, Pond & swap adjustment factor,...Fp = 1.00
9. Peak Discharge,gp ...............cfs = 25.4837
• DITCH C8
Channel Type: Trapezoidal, Equal Side Slopes
Dimensions: Left Side Slope 2.00:1
Right Side Slope 2.00:1
Base Dimension: 6.00
Wetted Perimeter: 8.27
Area of Wetted Cross Section: 3.56
Discharge: 25.50 cfs
Depth of Flow: 0.51 feet
Velocity: 7.16 fps
Freeboard: 0.30 feet
• REVISED MARCH2O06 Attachment 2.05.3(3)-1-20