PERMFILE105841

• Permit No: C1981048
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT V-3
• Media Type: D
• Archive: No

Ditch Design
• 1. Ditch: 22-DS (Revised 10/3/84)
2. Description: Diversion Ditch
3. Ditch CYade: 3 percent
4. Area Drained: 26.97 acres
5. Peak Discharge: (1.12)(38.5)(1.11) = 97.86
6. Ditch Design:
pitch Lining Pock
n = .045
Use ditch w/"V" ~.ralls 1:2 slope
A=2
P = 4.972D
FIIi = A/P = .4472D
4 = (1.49/n) (A) (~) 2/3 (Sl/2)
•
D = 2.67 4
~ 38.39 (S)-
D = 2.67 47.86
38.39 (.03)~
D = 2.09 feet
Use _ 2.6 _ feet deep with freeboard.