2007-10-30_PERMIT FILE - C1982057A ‎(4)‎

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 10/30/2007
• Doc Name: Postmine Drainage Channel Design
• Section_Exhibit Name: Tab 20 Attachment 20-1
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
(:nrnrrinh} ~ppp p~mclo 1 Crhur~h
6
Subwatershed Hydro%gy Detai/:

Stru
#
SWS
#
SWS Area
(ac) Time of
Conc
(hm)
Musk K
(hrs)
Musk X Curve

Number
UHS Peak
Discharge
(~s) Runoff
Volume
(ac-ft)
#7 1 13.800 0.088 0.000 0.000 54.000 M 0.00 0.000
13.800 0.00 0.000
#6 1 57.700 0.107 0.000 0.000 70.000 M 7.69 0.666
57.700 7.69 0.666
#5 1 20.400 0.143 0.021 0.433 60.000 M 0.04 0.032
2 42.400 0.071 0.021 0.433 70.000 M 5.65 0.489
3 7.600 0.057 0.000 0.000 70.000 M 1.01 0.088
70.400 6.66 0.610
#4 1 8.500 0.066 0.000 0.000 65.000 M 0.12 0.046
150.400 14.42 1.321
Subwatershed Time of Concentration Detai/s;
Stru
# SWS
#
Land Flow Condition p
Slope (/o) Vert. Dist.
(ft) Horiz. Dist.
(ft) Velocity
(fps) Time (hrs)
#4 1 3. Short grass pasture 17.50 70.00 400.00 3.340 0.033
6. Grassed waterway 12.50 60.00 480.00 5.300 0.025
8. Large gullies, diversions, and low
flowing streams 10.00 30.00 300.00 9.480 0.008
#4 1 Time of Concentration: 0.066
#5 1 3. Short grass pasture 14.44 65.00 450.00 3.040 0.041
1. Forest with heavy ground litter 18.18 20.00 110.00 1.070 0.028
7. Paved area and small upland
gullies 13.64 180.00 1,320.00 7.430 0.049
6. Grassed waterway 16.55 91.00 550.00 6.100 0.025
#5 1 Time of Concentration: 0.143
#5 2 3. Short grass pasture 20.00 80.00 400.00 3.570 0.031
6. Grassed waterway 60.71 170.00 280.00 11.680 0.006
8. Large gullies, diversions, and low
flowing streams 14.41 206.00 1,430.00 11.380 0.034
#5 2 Time of Concentration: 0.071
#5 3 3. Short grass pasture 12.50 50.00 400.00 2.820 0.039
8. Large gullies, diversions, and low
flowing streams 14.00 105.00 750.00 11.220 0.018
#5 3 Time of Concentration: 0.057
#6 1 3. Short grass pasture 14.29 50.00 350.00 3.020 0.032
6. Grassed waterway 2.08 5.00 240.00 2.160 0.030
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Filename: 005 Gulch TR59 08_07.sc4 Printed 08-22-2007
TR-59 20-1-7 Revised 08/07