2022-07-12_PERMIT FILE - C1981019 ‎(24)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 7/12/2022
• Doc Name: Sediment 26 Pond Sediment Control During Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part C
• Media Type: D
• Archive: No

Subwatershed Hydrology Detail:
Stru
#
SWS
#
SWS Area
(ac)
Time of
Conc
(hrs)
Musk K
(hrs)Musk X Curve
Number UHS
Peak
Discharge
(cfs)
Runoff
Volume
(ac-ft)
#7 1 1.900 0.016 0.000 0.000 74.000 F 1.10 0.079
2 16.800 0.216 0.000 0.000 47.000 M 0.00 0.000
3 5.800 0.132 0.000 0.000 85.000 F 5.45 0.476
4 26.400 0.193 0.000 0.000 47.000 M 0.00 0.000
5 4.500 0.031 0.000 0.000 47.000 M 0.00 0.000
55.400 6.23 0.555
#6 1 56.500 0.056 0.000 0.000 74.000 F 32.83 2.347
2 7.300 0.044 0.000 0.000 85.000 F 8.07 0.621
63.800 40.90 2.968
#8 1 1.700 0.018 0.000 0.000 85.000 F 1.88 0.144
65.500 42.78 3.112
#5 65.500 42.78 3.112
#4 1 1.500 0.017 0.000 0.000 85.000 F 1.66 0.127
67.000 2.27 2.537
#3 122.400 8.50 3.091
#2 1 1.000 0.010 0.000 0.000 85.000 F 1.11 0.085
2 1.900 0.014 0.000 0.000 57.000 M 0.03 0.008
3 3.000 0.003 0.000 0.000 85.000 F 3.32 0.255
128.300 12.93 3.439
#1 128.300 1.57 2.848
Subwatershed Time of Concentration Details:
Stru
#
SWS
#Land Flow Condition Slope (%)
Vert. Dist.
(ft)
Horiz. Dist.
(ft)
Velocity
(fps)Time (hrs)
#2 1
5. Nearly bare and untilled, and
alluvial valley fans 17.00 25.84 152.00 4.120 0.010
#2 1 Time of Concentration: 0.010
#2 2 3. Short grass pasture 24.80 50.09 202.00 3.980 0.014
#2 2 Time of Concentration: 0.014
#2 3
5. Nearly bare and untilled, and
alluvial valley fans 32.00 25.28 79.00 5.650 0.003
#2 3 Time of Concentration: 0.003
#4 1
5. Nearly bare and untilled, and
alluvial valley fans 29.00 100.34 346.00 5.380 0.017
#4 1 Time of Concentration: 0.017
Filename: Section 26 25-Year 24-Hour During Mining.sc4 Printed 03-14-2022
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