PERMFILE60947

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 7/5/2002
• Section_Exhibit Name: Exhibit 15 Fill 9 Ditch Design
• Media Type: D
• Archive: No

Top Hydraulic Froude
Depth Velocity Width Radius Number
(ft) (fps) (ft)
==0.30--==15.79**=====7.8--_--==0.262---===5.40 •~
w/ Freeboard: 0.60 9.6
** Non-uniform flow - Velocity shown is V=Q/A and may not be applicable
----DMax---- ----D50---- ----D10----
(ft) (in) (ft) (in) (ft) (in)
------------------------------------------
------------------------------------------
1.25 15.00 1.00 12.00 0.33 4.00
Runoff Peak
Volume Discharge
(ac-ft) (cfs)
-----------------------------
-----------------------------
IN/OUT 3.11 32.69
*******************************************************************************
J1, B2, S1
DITCH 93
Drainage Area from J1, B2, S1, SWS(s)1-2: 2.2 acres
Total Contributing Drainage Area: 2.2 acres
MATERIAL:
Triangular Earthen Channel
Limiting Variable: Velocity = 5.500 fps
Sediment-laden Water
Design
Discharge
(cfs)
6.60
Depth
(ft)
0.82
w/ Freeboard: 1.12
Bottom Manning's
Width ZLeft ZRight Slope n
(ft) (~)
2.5:1 2.5:1 3.0 0.035
Top Hydraulic Froude
Velocity Width Radius Number
(fps) (ft)
---------------------------------------
---- ---- ---- --- -
3.89 4.1 0.383 1.07
5.6
Runoff Peak
Volume Discharge
(ac-ft) (cfs)
-----------------------------
-----------------------------
IN/OUT 0.60 6.60
*******************************************************************************
J1, B2, 52
DITCH 94 .
Drainage Area from J1, B2, S2, SWS(s)1-5: 7.4 acres
Total Contributing Drainage Area: 9.6 acres