2010-12-08_PERMIT FILE - C1981008A ‎(6)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/8/2010
• 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

4. Initial abstraction, la............ = 0.5641
5. Compute la /P ....................... = 0.2350
6. Unit peak discharge, qu ...... csm/in = 282.11
7. Runoff, Q .........................in = 0.7238
8. Pond & swap adjustment factor .... Fp = 0.87
9. Peak Discharge,gp ...............cfs = 61.8188
DITCH C18 UPPER PORTION
Channel Type: Trapezoidal, Equal Side Slopes
Dimensions: Left Side Slope 2.00:1
Right Side Slope 2.00:1
Base Dimension: 7.00
Discharge: 47.00 cfs
Depth of Flow: 1.23 feet
Velocity: 4.05 fps
Channel Lining: GRASS
Freeboard: 0.30 feet
DITCH C18 LOWER PORTION
Channel Type: Trapezoidal, Equal Side Slopes
Dimensions: Left Side Slope 2.00:1
Right Side Slope 2.00:1
Base Dimension: 7.00
Wetted Perimeter: 13.39
Area of Wetted Cross Section: 14.08
Revised August 2009(PB06) Attachment 2.05.3(3) -1 -32