2021-12-15_PERMIT FILE - C1981019A

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 12/15/2021
• Doc Name: East Taylor Pond & Permanent Channels
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14ET
• Media Type: D
• Archive: Yes

Bottom
Width (ft)
Left
Sideslope
Ratio
Right
Sideslope
Ratio
Slope (%)Freeboard
Depth (ft)
Freeboard
% of Depth
Freeboard
Mult. x
(VxD)
12.00 3.0:1 3.0:1 9.8 3.67
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 83.09 cfs
Depth: 0.57 ft 4.24 ft
Top Width: 15.42 ft 37.44 ft
Velocity*:
X-Section Area: 7.82 sq ft
Hydraulic Radius: 0.501 ft
Froude Number*:
Manning's n*:
Dmin: 3.00 in
D50: 9.00 in
Dmax: 11.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #11 (Pond)
TD-2 Stockpond
Pond Inputs:
Initial Pool Elev: 7,445.00 ft
Initial Pool: 0.09 ac-ft
Emergency Spillway
Spillway Elev Crest Length
(ft)
Left
Sideslope
Right
Sideslope
Bottom
Width (ft)
7,454.00 30.00 2.00:1 2.00:1 20.00
Pond Results:
Peak Elevation: 7,454.60 ft
Dewater Time: 0.52 days
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
Filename: East Taylor Pond 25 Yr 24 Hr Post Mine.sc4 Printed 11-08-2021
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