2020-03-31_PERMIT FILE - C1981019A ‎(13)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/31/2020
• Doc Name: Prospect Sedimentation Pond
• Type & Sequence: TR136
• Section_Exhibit Name: Exhibit 07 Item 20 Part PP
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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20
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope(%) Mult. x
Width(ft) Ratio Ratio Depth (ft) %of Depth
(VxD)
12.00 2.0:1 2.0:1 13.0 1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/Freeboard
Design Discharge: 15.91 cfs
Depth: 0.14 ft 1.14 ft
Top Width: 12.54 ft 16.54 ft
- -----Velocity*; - -
lot
X-Section Area: 1.66 sq ft
Hydraulic Radius: 0.132 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D50: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #16(Pond)
Pond EP1
Pond Inputs:
Initial Pool Elev: 7,375.00 ft
Initial Pool: 0.63 ac-ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width(ft)
7,377.80 20.00 2.00:1 2.00:1 20.00
Straight Pipe
Barrel Barrel Entrance Tailwater
Barrel Manning's Spillway
Diameter Length Loss Depth
Slope(%) n Elev(ft)
(in) (ft) I Coefficient (ft)
12.00 100.00 1.50 0.0150 7,375.00 0.90 0.00
Pond Results:
Filename. Prospect Pond 25 Yr 24 Hr Storm Event.sc4 Printed 01-06-2020