2017-05-12_PERMIT FILE - C2010089A ‎(17)‎

• Permit No: C2010089A
• IBM Index Class Name: Permit File
• Doc Date: 5/12/2017
• Doc Name: Pond NHN-002 & NHN-002 DItch Designs
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-8
• Media Type: D
• Archive: Yes

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Structure #1 (Culvert)
Pit Pumping
Culvert Inputs:
Max. Entrance
Length (ft) Slope (%) Manning's n Headwater Tailwater (ft) Loss Coef.
(ft) (Ke)
1,000.00 2.00 0.0140 1.00 0.00 0.9(
Culvert Results:
Structure #2 (Pond
.r. Pond NHN-002
Pond Inputs:
.w•-
Design Discharge = 2.00 cfs
Minimum pipe diameter: 1 - 12 inch pipe(s) required
Initial Pool Elev:
w/o Freeboard w/ Freeboard
Top Width:
13.48 ft 17.48 ft
Velocity:
4.19 fps
X -Section Area:
4.71 sq ft
Hydraulic Radius:
0.345 ft
Froude Number:
1.25
Structure #1 (Culvert)
Pit Pumping
Culvert Inputs:
Max. Entrance
Length (ft) Slope (%) Manning's n Headwater Tailwater (ft) Loss Coef.
(ft) (Ke)
1,000.00 2.00 0.0140 1.00 0.00 0.9(
Culvert Results:
Structure #2 (Pond
.r. Pond NHN-002
Pond Inputs:
.w•-
Design Discharge = 2.00 cfs
Minimum pipe diameter: 1 - 12 inch pipe(s) required
Initial Pool Elev:
5,680.75 ft
Initial Pool:
3.39 ac -ft
*Sediment Storage:
2.03 ac -ft
Dead Space:
20.00%
*Sediment capacity based on Average Annual R of 27.0 for 3 year(s)
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
5,686.00 10.00 2.00:1 2.00:1 10.00
Perforated Riser
Riser
Diameter (in) Riser Height
Barrel
Diameter (in) Barrel Length Barrel Slope
Manning Number of
gs n Spillway Elev Holes per
(ft)
(ft) (/o)
(ft) Elev
18.00 6.00
18.00 10.00 1.00
0.0140 5,684.00 2
Pond Results:
Filename: Pond NHN-002 DESIGN 10YR EVENT_02.15.17.sc4 Printed 02-15-2017
Appendix 2.05.3(4)-8 Page 13 February 2017 JR -15)