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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6

Structure #1 (Pond
Pond Inputs:
Structure Detai/.•
Initial Pool Elev: 6,369.05
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 0.014G
Straight Pipe
•
Barrel Barrel Entrance Tailwater
Barrel Manning's Spillway
Diameter Length Loss Depth
Slope (%) n Elev
(in) (ft) Coefficient (ft)
30.00 155.OD 4.OO 0.0140 6,392.70 0.90 2.00
Pond Results:
Peak Elevation: 6,392.13
H'graph Detention Tme: 9.53 hrs
Pond Model: CSTRS
Dewater Time: 1.06 days
Trap Efficiency: 80.14
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
•

Elevation Area

(ac) Capacity

(ac-ft) Discharge

(cfs) Dewater
Time
(hrs)
6,384.90 0.010 0.000 0.000 Top of Sed. Storage
6,385.40 0.060 0.016 0.000
6,385.90 0.151 0.067 0.000
6,386.40 0.285 0.174 0.000
6,386.90 0.460 0.359 0.000
6,387.40 0.505 0.600 0.000
Filename: Gossard-SpillwayDesign.scA Printed 05-11-2002