PERMFILE119988

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: NH1 TAB 13 APPENDIX II SEDCAD AND HYDRAULICS DESIGNS DITCHES 2 YEAR 24 HOUR EVENT
• Media Type: D
• Archive: Yes

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0.74 5.3 1.5:1 6.0:1 3.8 0.030
• Top Hydraulic Froude
Depth Velocity Width Radius Number
(ft) (fps) (ft)
0.08 1.69 5.9 0.074 1.10
w/ Freeboard: 0.38 8.1
Runoff Peak
Volume Discharge
(ac-ft) (cfs)
IN/OUT 0.06 0.74
t,t,t,tt*,t**,t~*,t*,t,t,t****,t*,t,t*****,t*,t~*******,t**,t,t,t,t,t*,t*,t*,t**~*****,r***,t ,t**,t ,t***,t**
J2, Bl, S1
DITCH TO POND 004-UP
Drainage Area from J2, B1, S1, SWS(s)1: 3.0 acres
Total Contributing Drainage Area: 8.5 acres
MATERIAL: GRADED LOAM TO COBBLES NONCOLLOIDAL
Trapezoidal Earthen Channel
Limiting Variable: Velocity = 3.750 fps
Clear Water
• Design
Discharge
(cfs)
1.72
Depth
(ft)
0.12
w/ Freeboard: 0.42
Bottom Manning's
Width ZLeft ZRight Slope n
(ft) (%)
5.3 1.5:1 6.0:1 5.0 0.030
Top Hydraulic Froude
Velocity Width Radius Number
(fps) (ft)
---------------------------------------
2.54 6.2 0.109 1.35
8.4 -.=~
Runoff Peak
Volume Discharge
(ac-ft) (cfs)
IN/OUT 0.14 1.72
************************************~*~********+*****,r*******************~~****
J2, B2, S1
BENCH EAST OF 004
Drainage Area from J2, B2, S1, SWS(s)1: 2.6 acres
Total Contributing Drainage Area: 2.6 acres
• MATERIAL: GRADED LOAM TO COBBLES NONCOLLOIDAL
Triangular Earthen Channel
Limiting Variable: Velocity = 3.750 fps
Clear Water
Design Bottom Manning's