2021-09-03_PERMIT FILE - C1981019 ‎(5)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 9/3/2021
• Doc Name: Collom Haul Road Channel Configurations
• Type & Sequence: TR149
• Section_Exhibit Name: Exhibit 7, Item 25E
• 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 4.200 0.155 0.000 0.000 85.000 F 2.52 0.220
4.200 2.52 0.220
#4 4.200 2.52 0.220
#6 1 1.000 0.003 0.000 0.000 85.000 F 0.73 0.054
2 87.100 0.198 0.000 0.000 47.000 S 0.00 0.000
88.100 0.73 0.054
#5 88.100 0.73 0.054
#3 1 0.400 0.004 0.000 0.000 47.000 S 0.00 0.000
2 0.500 0.001 0.000 0.000 85.000 F 0.36 0.023
89.000 1.09 0.077
#2 89.000 1.09 0.077
#1 1 0.700 0.003 0.000 0.000 85.000 F 0.51 0.038
2 0.200 0.011 0.000 0.000 47.000 S 0.00 0.000
94.100 3.91 0.334
Subwatershed Time of Concentration Details:
Stru
#
SWS
#Land Flow Condition Slope (%)
Vert. Dist.
(ft)
Horiz. Dist.
(ft)
Velocity
(fps)Time (hrs)
#1 1
5. Nearly bare and untilled, and
alluvial valley fans 52.00 49.92 96.00 7.210 0.003
#1 1 Time of Concentration:0.003
#1 2 3. Short grass pasture 18.00 25.56 142.00 3.390 0.011
#1 2 Time of Concentration:0.011
#3 1 3. Short grass pasture 35.00 24.85 71.00 4.730 0.004
#3 1 Time of Concentration:0.004
#3 2
5. Nearly bare and untilled, and
alluvial valley fans 54.00 24.84 46.00 7.340 0.001
#3 2 Time of Concentration:0.001
#6 1
5. Nearly bare and untilled, and
alluvial valley fans 50.00 50.00 100.00 7.070 0.003
#6 1 Time of Concentration:0.003
#6 2 3. Short grass pasture 15.00 331.50 2,210.00 3.090 0.198
#6 2 Time of Concentration:0.198
#7 1
5. Nearly bare and untilled, and
alluvial valley fans 4.30 49.79 1,158.00 2.070 0.155
#7 1 Time of Concentration:0.155
Filename: C-5 C-6 Channels 10-yr 24-hr.sc4 Printed 06-16-2021
SEDCAD 4 for Windows
Copyright 1998 -2010 Pamela J. Schwab
Civil Software Design, LLC 8