2021-04-05_PERMIT FILE - C1981019A ‎(18)‎

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

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13
Combined
Elevation Emergency Total
(ft) Spillway(cfs) Discharge
(cfs)
90.00 0.000 0.000
90.01 0.000 0.000
91.00 0.000 0.000
92.00 0.000 0.000
93.00 0.000 0.000
94.00 0.000 0.000
95.00 0.000 0.000
96.00 0.000 0.000
97.00 0.000 0.000
98.00 0.000 0.000
99.00 0.000 0.000
100.00 0.000 0.000
101.00 0.000 0.000
102.00 0.000 0.000
103.00 0.000 0.000
104.00 48.400 48.400
105.00 167.398 167.398
Structure #13(Vegetated Channel
Streeter Ditch 91+00 to 111+00
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
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)
15.00 3.0:1 3.0:1 3.2 D, B 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: 21.13 cfs 21.13 cfs
Depth: 0.47 ft 0.83 ft
Top Width: 17.83 ft 20.01 ft
Velocity: 2.73 fps 1.45 fps
X-Section Area: 7.73 sq ft 14.62 sq ft
Hydraulic Radius: 0.430 ft 0.721 ft
Froude Number: 0.73 0.30
Roughness 0.0555 0.1480
Coefficient:
Filename: Exhibit 7-14SP Streeter Pond 10 Yr 24 Hr.sc4 Printed 01-19-2021