2021-12-15_PERMIT FILE - C1981019A

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 12/15/2021
• Doc Name: East Taylor Pond & Permanent Channels
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14ET
• Media Type: D
• Archive: Yes

Structure #13 (Riprap Channel)
East Taylor Ditch 0+00 to ETD-1
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom
Width (ft)
Left
Sideslope
Ratio
Right
Sideslope
Ratio
Slope (%)Freeboard
Depth (ft)
Freeboard
% of Depth
Freeboard
Mult. x
(VxD)
12.00 3.0:1 3.0:1 11.8
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 12.22 cfs
Depth: 0.11 ft
Top Width: 12.69 ft
Velocity*:
X-Section Area: 1.41 sq ft
Hydraulic Radius: 0.111 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D50: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #18 (Riprap Channel)
Taylor Trib Ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom
Width (ft)
Left
Sideslope
Ratio
Right
Sideslope
Ratio
Slope (%)Freeboard
Depth (ft)
Freeboard
% of Depth
Freeboard
Mult. x
(VxD)
12.00 3.0:1 3.0:1 17.0
Riprap Channel Results:
Simons/OSM Method - Mild Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 0.05 cfs
Depth: 0.02 ft
Filename: East Taylor Pond 10 Yr 24 Hr Post Mine.sc4 Printed 11-08-2021
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