1988-04-18_PERMIT FILE - C1981008A ‎(4)‎

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/18/1988
• Doc Name: Sedimentation Pond 007
• Section_Exhibit Name: Tab 13 Attachment G
• Media Type: D
• Archive: Yes

Elevation H Q
(msl) (ft.) (cfs)
5647.0 0.0 0.0
5648.0 1.0 1.29
5650.0 3.0 2.23
5652.5 5.5 3.02
5655.0 8.0 3.64
5657.0 10.0 4.07
Table 7 is a summary of the spillway data.
TABLE 7
Spillway Data Summary
Sedimentation Pond 007
Principal Spillway: Type . . . . . . . . . . . . . . Riser Inlet (CMP)
Orifice Diameter . . . . . . . . 7.0 inch
Inlet Elevation. . . . . . . . . 5647.0
10-year, 24-hour
Peak Storage . . . . . . . . . . 5651.2
Emergency Spillway: Type . . . . . . . . . . . . . . Drop Inlet (CMP)
Barrel Diameter. . . . . . . . . 30.0 inch
Riser Diameter . . . . . . . . . 30.0 inch
Length of Barrel . . . . . . . . 120.0 ft
Vertical Head Drop . . . . . . . 8.5 ft
Entrance Loss Coef . . . . . . . 1.0
Bend Loss Coef . . . . . . . . . 0.5
Wier Coef . . . . . . . . . . . 3.1
Orifice Coef . . . . . . . . . . 0.6
Manning Coef . . . . . . . . . . 0.025
Inlet Elevation . . . . . . . . 5652.5
25-year, 24-hour Peak Stage. . . 5654.4
The entrance to the emergency spillway is located 5.5 feet above the principal spillway.
There will be no flow through the emergency spillway inlet as a result of the runoff from
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