2015-10-16_PERMIT FILE - C1981018 ‎(3)‎

• Permit No: C1981018
• IBM Index Class Name: Permit File
• Doc Date: 10/16/2015
• Doc Name: SDH-3 Dewatering Pond System Hydrology and Sedimentology
• Section_Exhibit Name: Illustration 56
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
loon _9nln D -1c I
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft)
Mult. x
Ratio Ratio
Depth (ft) % of Depth (VxD)
1.50 2.0:1 2.0:1 18.0
1.91 ft
Riprap Channel Results:
Structure #1 (Pond)
Lower Pond
Pond Inputs:
Simons/OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev: 5,426.89 ft
Initial Pool: 0.31 ac -ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
5,428.75 15.00 2.00:1 2.00:1 1.50
Straight Pipe
Barrel Barrel
w/o Freeboard w/ Freeboard
Design Discharge:
1.86 cfs
Depth:
0.10 ft
Top Width:
1.91 ft
Velocity*:
Slope (%)
X -Section Area:
0.17 sq ft
Hydraulic Radius:
0.088 ft
Froude Number*:
6.00 20.00 1.50
Manning's n*:
Dmin:
4.00 in
D50:
12.00 in
Dmax:
15.00 in
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev: 5,426.89 ft
Initial Pool: 0.31 ac -ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
5,428.75 15.00 2.00:1 2.00:1 1.50
Straight Pipe
Barrel Barrel
Entrance Tailwater
Barrel
Manning's Spillway
Diameter Length
Loss Depth
Slope (%)
n Elev (ft)
(in) (ft)
Coefficient (ft)
6.00 20.00 1.50
0.0140 5,426.89 0.20 0.00
Pond Results:
Peak Elevation: 5,428.66 ft
Dewater Time: 0.89 days
H
Filename: SDH -3 Pond Expansion 2015 100 -yr hydrology.sc4 Printed 09-10-2015