PERMFILE45602

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 2/28/2006
• Doc Name: Postmining Channels SEDCAD4 YPM-1 to YPM-6A
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13-12.3
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
cnn.m..m ~°oa o~.,.eio i c,.n,.,~n
Subwatershed Hydro/ogy Detai/;

C J

Stru
#
SWS
#
SWS Area
(ac) Time of
Cori
(hrs) ~
Musk K
(hrs)
Musk X
Curve
Number
UHS Peak
Discharge
(ds) Runoff
Volume
(ac-R)
#3 1 6.300 0.049 0.000 0.000 71.000 M 1.01 0.082
6.300 1.01 0.062
#1 1 29.400 0.082 0.000 0.000 71.000 M 4.72 0.385
2 3.100 0.025 0.044 0.413 42.000 M 0.00 0.000
32.500 4.72 0.385
#2 1 23.400 0.065 0.000 0.000 71.000 M 3.76 0.306
55.900 8.48 0.691
#S 1 1.500 0,019 0.029 0.427 43.000 M 0.00 0.000
2 28.300 0,075 0.000 0.000 71.000 M 4.54 0.370
3 3.100 0,009 0.036 0.409 41.000 M 0.00 0.000
95.100 14.03 1.143
Subwatershed Time of Concentration Detai/s:
Stru SWS land Flow Condition Slope (%) vert. Dist. Horiz. Dist. Velocity Time {hrs)
# # (ft) (ft) (fps)
#1 1 5. Nearly bare and unfilled, and 11.25 45.00 400.00 3.350 0.033
alluvial valley fans
7. Paved area and small upland 25.00 50.00 200.00 10.060 0.005
gullies
8. large gullies, diversions, and low 6.80 65.00 1,250.00 7.820 0.044
Flowing streams
#1 1 Time of Concentration: 0.082
#1 2 3. Short 9255 pasture 10.42 25.00 240.00 2.580 0.025
#1 2 Time of Concentration: 0.025
#2 1 5. Nearly bare and unfilled, and 21.25 85,00 400.00 4.600 0.024
alluvial valley fans
7. Paved area and small upland 17.65 30.00 170.00 8.450 0.005
gullies
8. Large gullies, diversions, and low 9.86 105.00 1,185.00 8.930 0.036
Flowing streams
#2 1 Time of Concentration: 0.065
#3 1 S. Nearly bare and unfilled, and 12.50 50.00 400.00 3.530 0.031
alluvial valley fans
7. Paved area and small upland 25.00 40.00 160.00 10.060 0.004
gullies
8. large gullies, diversions, and low 11.93 65.00 545.00 10.360 0.014
flowing streams
#3 1 Time of Concentration: 0.049
Filename: YPM-1.sc4 Printed 03-03-2005