2021-04-05_PERMIT FILE - C1981019A ‎(5)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 4/5/2021
• Doc Name: East Taylor Pond & Permanent Channels
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14ET
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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17
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope(%) Mult.x
Width(ft) Ratio Ratio Depth (ft) %of Depth (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: 39.01 cfs
Depth: 0.31 ft 3.98 ft
Top Width: 13.87 ft 35.89 ft
Velocity*:
X-Section Area: 4.03 sq ft
Hydraulic Radius: 0.289 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 (Ponds
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 Spillwax
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
7,454.00 30.00 2.00:1 2.00:1 20.00
Pond Results:
Peak Elevation: 7,454.06 ft
H'graph Detention Time: 3.71 hrs
Pond Model: CSTRS
Dewater Time: 0.40 days
Trap Efficiency: 100.00%
Dewatering time is calculated from peak stage to lowest spillway
Filename: East Taylor Pond 10 Yr 24 Hr Post Mine.sc4 Printed 03-24-2021