2015-03-16_PERMIT FILE - C1981008 ‎(2)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 3/16/2015
• 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

Location: DITCH C5 Checked: Date:
Present
1. Data:
Drainage area: .................... A = 48.0240 Acres
Runoff Curve Number: ............. CN = 84
Time of Concentration: ........... Tc = 0.42
Storm Type: ....................... = II
Pond and swamp areas spread
throughout watershed ............... = 0.00 percent of A
0.0000 Acres
2. Frequency ........................yr = 10
3. Rainfall,P(24- hour) .............. in = 2.00
4. Initial abstraction, la............ = 0.3810
5. Compute la /P ....................... = 0.1905
6. Unit peak discharge, qu ...... csm /in = 541.41
7. Runoff ,Q .........................in = 0.7439
8. Pond & swap adjustment factor .... Fp = 1.00
9. Peak Discharge,gp ...............cfs = 30.2212
DITCH C5
Channel Type: Trapezoidal, Equal Side Slopes
1. Channel Geometric Properties
Dimensions: Left Side Slope .... ............................... = 1.00:1
Right Side Slope ... ............................... = 1.00:1
Base Dimension ..... ..............................: 5.00
2. Design Parameters
Mannings coefficient, n ............ ..............................: 0.020
Bed Slope,s (%) ................... ..............................: 1.000
Revised June 2011 (TR -60) Attachment 2.05.3(3) -1 -15