2021-04-05_PERMIT FILE - C1981019A ‎(17)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 4/5/2021
• Doc Name: Section 16 Pond Temporary and Permanent Channels
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14S
• Media Type: D
• Archive: Yes

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Structure Detail;
Structure #6(Vegetated Channel
West Section 16 Ditch 45+00 to 63+57
Trapezoidal Vegetated Channel Inputs:
Material: Tall fescue
Bottom
Left Right Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope(%) Classes Mult. x Velocity
Width(ft) Ratio Ratio Depth (ft) %of Depth (VxD) (fps)
10.00 4.0:1 2.0:1 3.0 D, B 1.00 7.0
Vegetated Channel Results:
Stability Stability Capacity Capacity
Class D w/o Class D w/ Class B w/o Class B w/
Freeboard Freeboard Freeboard Freeboard
Design Discharge: 0.16 cfs 0.16 cfs
Depth: 0.07 ft 1.07 ft 0.23 ft 1.23 ft
Top Width: 10.45 ft 16.45 ft 11.40 ft 17.40 ft
Velocity: 0.22 fps 0.07 fps
X-Section Area: 0.77 sq ft 2.49 sq ft
Hydraulic Radius: 0.073 ft 0.217 ft
Froude Number: 0.14 0.02
Roughness 0.2072 1.4093
Coefficient:
Structure #5(Vegetated Channel
West Section 16 Ditch at 45+00
Trapezoidal Vegetated Channel Inputs:
Material: Tall fescue
Left Right Freeboard Limiting
9 Freeboard Freeboard 9
Bottom Retardance
Sideslope Sideslope Slope(%) Cl Mult. x Velocity
Width(ft) Ratio Ratio asses Depth (ft) %of Depth (VxD) (fps)
2.00 1.0:1 7.0:1 3.0 D, B 7.0
Vegetated Channel Results:
Filename:Section 16 10 YR 24 HR Postmining Case.sc4 Printed 01-05-2021