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

• Storm Type :....................... = II
Pond and swamp areas spread
throughout watershed ............... = 1.00 percent of A
2.2270 Acres
2. Frequency ........................yr = 25
3. Rainfall,P(24-hour) ..............in = 2.40
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
• REVISEDMARCR2006 Attachment 2.05.3(3)-1-38