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
r.......i.hr iooa _,)nin o—i� i e,k,.—k
Elevation
(ft)
Emergency
Spillway (cfs)
Combined
Total
Discharge
(cfs)
5,440.00
0.000
0.000
5,441.00
0.000
0.000
5,442.00
0.000
0.000
5,443.00
0.000
0.000
5,444.00
0.000
0.000
5,445.00
6.100
6.100
5,446.00
30.559
30.559
Structure #4 (Riprap Channel)
Channel from Upper to Middle Pond
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope (%)
Width (ft) Depth(t) of Depth Mult. x
Ratio Ratio
(VxD)
1.50 2.0:1 2.0:1 18.0
Riprap Channel Results:
Structure #3 (Pond
Middle Pond
Pond Inputs:
Simons/OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev: 5,437.00 ft
X
Filename: SDH -3 Pond Expansion 2015 100 -yr hydrology.sc4 Printed 09-10-2015
w/o Freeboard w/ Freeboard
Design Discharge:
Depth:
Top Width:
1.85 cfs
0.10 ft
1.91 ft
Velocity*:
X -Section Area:
0.17 sq ft
Hydraulic Radius:
0.088 ft
Froude Number*:
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: 5,437.00 ft
X
Filename: SDH -3 Pond Expansion 2015 100 -yr hydrology.sc4 Printed 09-10-2015