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

Present
1. Data:
Drainage area: .................... A = 226.8000 Acres
Runoff Curve Number: ............. CN = 78
Time of Concentration: ........... Tc = 1.21
Storm Type: ....................... =11
Pond and swamp areas spread
throughout watershed ............... = 1.00 percent of A
2.2680 Acres
2. Frequency ........................yr = 10
3. Rainfall ,P(24 - hour) .............. in = 2.00
4. Initial abstraction, la............ = 0.5641
5. Compute la /P ....................... = 0.2821
6. Unit peak discharge, qu ...... csm/in = 267.92
7. Runoff. Q .........................in = 0.4844
8. Pond & swap adjustment factor .... Fp = 0.87
9. Peak Discharge,gp ...............cfs = 40.0117
Revised August 2009(PB06) Attachment 2.05.3(3) -1 -75