2004-09-02_PERMIT FILE - C1981019A ‎(4)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2004
• Doc Name: Attachment 10 to 12
• Section_Exhibit Name: Exhibit 07 Gossard Pond - 003A
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure #1 Londl
Pond Inputs:
Structure Detai/;
Initial Pool Elev: 6,389.05
Initial Pool: 1.56 ac-ft
*Sediment Storage: 0.00 ac-ft
Dead Space: 20.00
*No sediment capacity defined
Fixed Siphon
Crest Elev Inlet Elev Outlet Elev Di (me)ter Length (ft) Manning's n
6,391.00 6,389.05 6,385.80 6.00 162.00 0.0140
Straight Pike

Barrel Barrel Entrance Tailwater

Barrel
Manning's
Spillway i
Diameter Length Loss Depth
Slope (%) n Elev
(in) (ft) Coefficient (ft)
30.00 155.00 4.00 0.0190 6,392.70 0.90 2.00
Pond Results:
Peak Elevation: 6,393.54
H'graph Detention Time: 9.54 hrs
Pond Model: CSTRS
Dewater Time: 1.35 days
Trap Efficiency: 74.92 %
Dewateiing time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table

Elevation Area

(ac) Capacity

(arft) Discharge

(~s) Dewater
Time
(hrs)
6,389.90 0.010 0.000 0.000 Top of Sed. Storage
6,385.90 0.060 0.016 0.000 ___
6,385.90 0.151 0.067 0.000 _
6,386.90 0.285 0.174 0.000
6,386.90 0.460 0.359 0.000
6,387.90 0.505 0.600 0.000
6
Filename: Gossard-Freeboard Design.sc4 Printed 05-11-2002