2011-06-29_PERMIT FILE - C1981019A ‎(19)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: West Taylor Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part C -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Left Right Retardance
Bottom
Freeboard Freeboard Freeboard
Limiting
Velocity
Sideslope Sideslope Slope ( %) Classes
Width (ft)
Depth (ft) % of Depth Mult. x (VxD)
(fps)
Ratio Ratio
20.00%
30.20 cfs
12.00 3.0:1 3.0:1 2.0 D, B
1.00
7.0
Vegetated Channel Results:
Structure #6 (Pond)
Sump
Pond Inputs:
Pond Results:
Initial Pool Elev:
Stability
Class D w/o
Freeboard
Stability
Class D w/
Freeboard
Capacity
Class B w/o
Freeboard
Capacity
Class B w/
Freeboard
Design Discharge:
30.20 cfs
20.00%
30.20 cfs
Depth:
0.69 ft
1.69 ft
1.16 ft
2.16 ft
Top Width:
16.17 ft
22.17 ft
18.97 ft
24.97 ft
Velocity:
3.09 fps
1.68 fps
X- Section Area:
9.79 sq ft
17.99 sq ft
Hydraulic Radius:
0.597 ft
0.930 ft
Froude Number:
0.70
0.30
Roughness Coefficient:
0.0484
0.1196
Structure #6 (Pond)
Sump
Pond Inputs:
Pond Results:
Initial Pool Elev:
100.00 ft
Initial Pool:
2.01 ac -ft
*Sediment Storage:
0.00 ac -ft
Dead Space:
20.00%
*No sediment capacity defined
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
100.00 20.00 2.00:1 2.00:1 20.00
Peak Elevation: 100.79 ft
H'graph Detention Time:
0.35 hrs
Pond Model:
CSTRS
Dewater Time:
0.80 days
Trap Efficiency:
22.92 %
Dewatering time is calculated from peak stage to lowest spillway
Elevation - Capacity- Discharge Table
21
Filename: WestT Pond1024.sc4 Printed 05 -31 -2010
Exh. 7 -20C -103 Revision Date: 5/31/10
Revision No.: TR -81