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
Cnmmn611°°A P~mula I CrFu~aF
23
• Structure #2 (t/e4etated Channe/)
Be%w terrace -east
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left Right
Retardance
Bottom Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%)
Classes
Width (ft)
ti
i
R Mult. x
Depth (ft) % of Depth Velocity
s)
(f
Rat
a
o
o (VxD) p
6.00 8.0:1 3.0:1 2.5 D, B 0.30 5.0
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: 1.95 cfs 1.95 cfs
Depth: 0.28 R 0.58 R 0.61 f[ 0.91 R
Top Width: 9.04 ft 12.34 R 12.76 ft 16.06 R
Velocity: 0.94 fps 0.34 fps
X-Section Area: 2.07 sq R 5.77 sq ft
Hydraulic Radius: 0.228 0.448
Froude Number: 0.35 0.09
Roughness Coeffcient: 0.0933 0.4085
Structure #1 (Pond)
Pond Sa
Pond Inputs:
Initial Pool Elev: 5,515.80
Initial Pool: 7.28 ac-ft
*Sediment Storage: 3.48 ac-ft
Dead Space: 20.00
*Sediment capacity based on Average Annual R of 16.6 for 20 year(s)
Emergenc~Soillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
5,515.80 37.00 0.00:1 3.00:1 10.00
Emeroency Soillwav
•
Filename: RP-5a terrace -foal confguration.scA
Printed 07-28-2004