2018-05-18_PERMIT FILE - C1981019A ‎(3)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 5/18/2018
• Doc Name: Collom Pond Design Maps
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 26
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
('—,,.,hf 1QQA -,)nin P—i. I Srhuinh
w/o Freeboard w/ Freeboard
Hydraulic Radius: 1.237 ft
Froude Number: 0.07
Structure #2 (Pond)
Temp Pond
Pond Inputs:
Pond Results:
Peak Elevation: 6,404.32 ft
H'graph Detention Time: 0.11 hrs
Pond Model: CSTRS
Dewater Time: 0.76 days
Trap Efficiency: 76.12%
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Capacity -Discharge Table
Elevation
Initial Pool Elev:
6,404.00 ft
Discharge Dewater
Time
(cfs) (hrs)
6,396.00
Initial Pool:
2.10 ac -ft
0.000 Top of Sed. Storage
6,397.00
*Sediment Storage:
0.00 ac -ft
0.000
6,398.00
Dead Space:
20.00
0.000
*No sediment capacity defined
Emergency Spillway
0.509
Spillway Elev Crest Length Left
Right Bottom
(ft) Sideslope
Sideslope Width (ft)
6,404.00 20.00 3.00:1
3.00:1 20.00
Peak Elevation: 6,404.32 ft
H'graph Detention Time: 0.11 hrs
Pond Model: CSTRS
Dewater Time: 0.76 days
Trap Efficiency: 76.12%
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Capacity -Discharge Table
Elevation
Area
(ac)
Capacity
(ac -ft)
Discharge Dewater
Time
(cfs) (hrs)
6,396.00
0.020
0.000
0.000 Top of Sed. Storage
6,397.00
0.200
0.094
0.000
6,398.00
0.200
0.294
0.000
6,399.00
0.230
0.509
0.000
6,400.00
0.260
0.754
0.000
6,401.00
0.300
1.034
0.000
6,402.00
0.330
1.349
0.000
6,403.00
0.370
1.699
0.000
6,404.00
0.430
2.098
0.000 Spillway #1
7
Filename. Printed 06-19-2017