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

Material: Riprap
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: 43.18 cfs
Depth: 0.34 ft 4.01 ft
Top Width: 14.03 ft 36.05 ft
Velocity*:
X-Section Area: 4.41 sq ft
Hydraulic Radius: 0.312 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 #11 (Pond)
TD-2 Stockpond
Pond Inputs:
Initial Pool Elev: 7,445.00 ft
Initial Pool: 0.09 ac-ft
*Sediment Storage: 0.00 ac-ft
Dead Space: 0.00 %
*No sediment capacity defined
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: 7,454.08 ft
H'graph Detention Time: 3.20 hrs
Pond Model: CSTRS
Dewater Time: 0.44 days
Filename: East Taylor Pond 10 Yr 24 Hr Post Mine.sc4 Printed 11-08-2021
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