2008-12-11_PERMIT FILE - C1980007A ‎(21)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 10 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 Pond MB-2R
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Culvert Results:
Design Discharge = 14.55 cfs
Minimum pipe diameter: 1 - 21 inch pipe(s) required
Structure. #1 (Pond)
MB-2R
Pond Inputs:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
42.00 5.00 0.0240 3.50 0.00 0.9(
Initial Pool Elev: 6,111.40 ft
Initial Pool: 8.01 ac-ft
*Sediment Storage: 0.68 ac-ft
Dead Space: 0.00%

*Sediment capacity based on A verage Annual R of 30.0 for 3 year(s)
Perforated Riser
Riser
Riser Height
Diameter Barrel
Barrel Barrel Slope
Diameter Number of
Spillway Elev
Holes per
Manning's n
(ft)
(in) Length (ft) (%)
(in) (ft)
Elev
48.00 18.00 48.00 320.00 6.25 0.0240 6,118.40 1
Emeraencv Spillwa
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,119.20 12.00 1.00:1 1.00:1 8.00
Pond Results:
Peak Elevation: 6,114.55 ft
H'graph Detention Time: 14.45 hrs
Pond Model: CSTRS
Dewater Time: 1.83 days
Trap Efficiency: 91.02%
Dewatenng time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
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Filename: MB-2R.sc4 Printed 10-23-2008