PERMFILE41445

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2004
• Section_Exhibit Name: Volume 8 Surface Drainage - Culvert Capacities
• Media Type: D
• Archive: No

Diameter: 12 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
0.15
0.30 0.25
0.49 Outlet
Outlet (Subcritical)
(Subcritical) 1
1
0.45 0.74 Outlet (Subcritical) 2
0.60 0.98 Inlet (Supercritical) 3
0.75 1.39 Inlet (Supercritical) 3
0.90 1.81 Inlet (Supercritical) 3
1.05 2.24 Inlet (Supercritical) 3
1.20 2.68 Inlet (Supercritical) 4
1.35 3.09 Inlet 5
1.50 3.42 Inlet 5

Diameter: 15 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
0.15 0.28 Outlet (Subcritical) 1
0.30 0.57 Outlet (Subcritical) 2 ~
0.45 0.85 Znlet (Supercritical) 3
0.60 1.24 Inlet (Supercritical) 3
0.75 1.72 Inlet (Supercritical) 3
0.90 2.25 Inlet (Supercritical) 3
1.05 2.83 Inlet (Supercritical) 3
1.20 3.45 Inlet (Supercritical) 3
1.35 4.10 Inlet (Supercritical) 3
1.50 4.71 Inlet (Supercritical) 4

Diameter: 18 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
----
----
0.15 0.32 Outlet (Subcritical) -
1
0.30 0.64 Outlet (Subcritical) 2
0.45 0.97 Inlet (Supercritical) 3
0.60 - 1.49 Inlet (Supercritical) 3
0.75 2.04 Inlet (Supercritical) 3
0.90 2.70 Inlet (Supercritical) 3
1.05 3.39 Inlet (Supercritical) 3
1.20 4.13 Inlet (Supercritical) 3
1.35 4.93 Inlet (Supercritical) 3
1.50 5.78 Inlet (Supercritical) 3
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