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

Discharge Width ZLeft ZRight Slope n
(cfs) (ft) (~)
----------
-----
---------
• 0.53 -------- ----------
1.6:1 ----
33.0:1 4.0 0.030
Top Hydraulic Froude
Depth Velocity Width Radius Number
(ft) (fps) (ft)
_-
__-
--
-_0.13-- ---1.64 -------4.7 0.067
---- 1.12
w/ Freeboard: 0.43 15.1
Runoff Peak
Volume Discharge
(ac-ft) (cfs)
IN/OUT 0.04 0.53
**********************,t********~**~********~*,r***********~***~*******~****t****
J3, B1, S1
INLET REACH TO 004
Drainage Area from J3, B1, S1, SWS(s)1: 0.2 acres
Total Contributing Drainage Area: 11.3 acres
•
2.28 1.3
w/ Freeboard:
MATERIAL: GRADED LOAM TO COBBLES
Trapezoidal Earthen Chan
Limiting Variable: Velocity =
Clear Water
Design Bottom
Discharge Width ZLeft ZRight
(cfs) (ft)
NONCOLLOIDAL
nel
3.750 fps
Manning's
Slope n
(%)
1.3:1 1.0:1 1.5 0.030
Top Hydraulic Froude
Width Radius Number
(ft)
Depth Velocity
(ft) (fps)
2.3 0.308 0.82
3.0
0.45 2.78
0.75
Runoff Peak
Volume Discharge
(ac-ft)
------ (cfs)
-----------
IN/OUT 0.18 ------------
2.28
*,t**t*tt*,t,t*s:*t*****tr******~******,t****,t,t***********~********************~****~
•