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

Perforated Riser
Riser
Diameter
(in)
Riser Height
(ft)
Barrel
Diameter
(in)
Barrel
Length (ft)
Barrel Slope
(%)Manning's n Spillway Elev
(ft)
Number of
Holes per
Elev
18.00 10.00 18.00 122.00 4.00 0.0150 6,952.00 2
Emergency Spillway
Spillway Elev Crest Length
(ft)
Left
Sideslope
Right
Sideslope
Bottom
Width (ft)
6,954.00 20.00 2.00:1 2.00:1 20.00
Pond Results:
Peak Elevation: 6,951.41 ft
H'graph Detention Time: 13.90 hrs
Pond Model: CSTRS
Dewater Time: 2.42 days
Trap Efficiency: 67.06 %
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
Elevation Area
(ac)
Capacity
(ac-ft)
Discharge
(cfs)
Dewater
Time
(hrs)
6,930.00 0.001 0.000 0.000 Top of Sed. Storage
6,931.00 0.036 0.014 0.000
6,932.00 0.076 0.069 0.000
6,933.00 0.110 0.161 0.000
6,934.00 0.134 0.283 0.000
6,935.00 0.156 0.428 0.000
6,936.00 0.178 0.595 0.000
6,937.00 0.201 0.785 0.000
6,938.00 0.226 0.998 0.000
6,939.00 0.252 1.237 0.000
6,940.00 0.280 1.504 0.000
6,941.00 0.310 1.799 0.000
6,942.00 0.340 2.123 0.000
6,943.00 0.373 2.480 0.000
6,944.00 0.409 2.871 0.000 Low hole SPW #1
6,945.00 0.446 3.298 0.473 10.94*
6,946.00 0.486 3.764 0.669 8.43*
6,947.00 0.527 4.270 0.819 7.48*
6,948.00 0.571 4.819 0.945 7.02*
Filename: East Taylor Pond 10 Yr 24 Hr Post Mine.sc4 Printed 11-08-2021
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