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

SEDCAD 4 for Windows
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Structure Detail:
Structure #1 (Culvert)
Pit Pumping
Culvert Inputs:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
1,000.00 2.00 0.0140 1.00 0.00 0.90
Culvert Results:
Design Discharge = 2.08 cfs
Minimum pipe diameter: 1 - 12 inch pipe(s) required
Structure #2 (Pond,
Pond NHN-002
Pond Inputs:
Perforated Riser
Riser
Riser Height
Diameter
Initial Pool Elev:
5,684.00 ft
(ft)
(in)
Length (ft) (oho)
(in)
Initial Pool:
12.35 ac -ft
18.00 10.00 1.00
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
Riser Height
Diameter
Barrel
Barrel Barrel Slope
Diameter
Number of
Spillway Elev
Manning's n Holes per
(ft)
(in)
Length (ft) (oho)
(in)
(ft)
Elev
18.00 6.00
18.00 10.00 1.00
0.0140 5,684.00 2
Pond Results:
Peak Elevation: 5,686.35 ft
Dewater Time: 1.49 days
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Capacity -Discharge Table
5
Filename: Pond NHN-200 25YR EVENT PRINCIPAL SPILLWAY OPEN 030CT14.sc4 Printed 10-03-2014