2023-04-19_PERMIT FILE - C1981010 ‎(108)‎

• Permit No: C1981010
• IBM Index Class Name: Permit File
• Doc Date: 4/19/2023
• Doc Name: West Buzzard Hydrologic Model
• Section_Exhibit Name: APPENDIX Q SECTION I
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
!`n.xwinhT 100R_9f1411 Gpmulp I C.hurph
Structure Detail:
Structure #1 (Pond)
West Buzzard No. 3
Pond Inputs:
Initial Pool Elev: 6,270.00 ft
Initial Pool: 0.62 ac-ft
*Sediment Storage: 0.94 ac-ft
Dead Space: 20.00%
*Sediment capacity was entered by user
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width(ft)
6,270.00 35.00 2.00:1 2.00:1 5.00
Emergency Eme[gency S illwa
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width(ft)
6,271.50 27.50 2.00:1 2.00:1 15.00
Pond Results:
Peak Elevation: 6,270.89 ft
H'graph Detention Time: 0.28 hrs
Pond Model: CSTRS
Dewater Time: 0.72 days
Trap Efficiency: 5.41%
Dewatenng time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
Area Capacity Discharge Dewater
Elevation Time
(ac) (ac-ft) (cfs) (hrs)
6,267.35 0.199 0.000 0.000 Top of Sed.Storage
6,267.50 0.201 0.030 0.000
6,268.00 0.217 0.135 0.000
6,268.50 0.230 0.247 0.000
6,269.00 0.244 0.366 0.000
6,269.50 0.258 0.491 0.000
Filename:West Buzzard 202210 yr event.sc4 Printed 05-09-2022