2020-07-14_PERMIT FILE - C1981008

• Permit No: C1981008
• IBM Index Class Name: Permit File
• Doc Date: 7/14/2020
• Doc Name: Pond 013 Postmining SEDCAD Modeling
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-32
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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11
Sub watershed Hydrology Detail;
SWS Area Time of Musk K Curve Peak Runoff
Stru SWS Conc Musk X UHS Discharge Volume
# # (ac) (hrs) (hrs) Number (cfs) (ac-ft)
#3 1 5.950 0.043 0.000 0.000 83.000 M 6.41 0.486
2 0.760 0.000 0.000 0.000 57.000 M 0.02 0.001
°p 6.710 6.43 0.486
#5 °p 6.710 6.43 0.486
#4 1 100.000 0.000 0.000 0.000 74.000 M 64.25 4.601
100.000 64.25 4.601
#2 1 30.900 0.291 0.000 0.000 83.000 M 18.77 2.017
2 7.110 0.118 0.000 0.000 83.000 M 7.66 0.580
3 17.760 0.174 0.000 0.000 83.000 M 12.42 1.178
4 3.340 0.031 0.000 0.000 83.000 M 3.60 0.273
5 1.140 0.006 0.000 0.000 57.000 M 0.02 0.004
°p 166.960 48.05 9.139
#1 °p 166.960 3.37 10.312
Sub watershed Time 0 Concentration Details;
Stru SWS Vert. Dist. Horiz. Dist. Velocity
# # Land Flow Condition Slope (%) (ft) (ft) (fps) Time (hrs)
#2 1 5. Nearly bare and untilled, and 2.32 37.00 1,594.82 1.520 0.291
alluvial valley fans
#2 1 Time of Concentration: 0.291
#2 2 5. Nearly bare and untilled, and 3.68 30.00 815.21 1.910 0.118
alluvial valley fans
#2 2 Time of Concentration: 0.118
#2 3 5. Nearly bare and untilled, and 2.85 30.00 1,052.63 1.680 0.174
alluvial valley fans
#2 3 Time of Concentration: 0.174
#2 4 5. Nearly bare and untilled, and 7.86 25.00 318.06 2.800 0.031
alluvial valley fans
#2 4 Time of Concentration: 0.031
#2 5 3.Short grass pasture 32.41 35.00 107.99 4.550 0.006
#2 5 Time of Concentration: 0.006
#3 1 5. Nearly bare and untilled, and 8.75 40.00 457.14 2.950 0.043
alluvial valley fans
#3 1 Time of Concentration: 0.043
Filename: Pond 013 25 Yr-24 Hr Event.sc4 Printed 07-09-2020