PERMFILE138818

• Permit No: C1981018
• IBM Index Class Name: Permit File
• Doc Date: 10/13/2004
• Doc Name: Post-Reclamation Refuse Area Runoff and Sedimentology Calculations
• Section_Exhibit Name: Illustration 49
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure Detai/.•
Structure #3 (Nu/1
Slope above pond
Structure #7 (t/eoetated Channel)
Upper channel
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left Right
Bottom Retardance Freeboard Freeboard Freeboard Limiting
Width (ft) Sideslope Sideslope Slope (%) Classes
R Depth (ft) % of Depth Mult. x Velocity
Ratio
atio (VxD) (fps)
4.00 3.0:1 4.0:1 3.0 D, B 0.30 4.0
Vegetated Channel Results:
Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 5.96 cfs 5.96 cfs
Depth: 0.49 ft 0.74 ft 0.91 ft 1.21 ft
Top Width: 7.44 ft 9.54 ft 10.38 ft 12.48 ft
Velocity: 2.12 fps 0.91 fps
X-Section Area: 2.81 sq ft 6.55 sq ft
Hydraulic Radius: 0.371 0.616
Froude Number: 0.61 0.20
Roughness Coefficient: 0.0627 0.2050
Structure #S Legetated Channe/)
Midd/e channe/
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left
Bottom Right
Retardance Freeboard Freeboard Freeboard Limiting
Sideslope
Width (ft) Sideslope Slope (%)
Classes Mult. x
Depth (ft) % of Depth Velocity
Ratio Ratio (~D) (fps)
6.00 3.0:1 4.D:1 3.5 D, B 0.30 S.0
Vegetated Channel Results:
Filename: RP-4 terrace -final configuration - 100yr.sc4 Printed 07-28-2004