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

ORCHARD VALLEY CULVERT "L" & "L'" 10 YEAR,
Design Discharge = 4.230
Entrance Loss Coefficient 0.7
Pipe Length = 410.000
Pipe Slope 25.000
Manning's n 0.024
Maximum Headwater = 2.000
Tailwater Depth = 0.000
Smallest Diameter Required to Pass Flow is
PERFORMANCE CURVES:
Diameter: 9 inches
cfs
feet
feet
feet
12 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Control
------------------------ Type
---------
0.20 0.27 Outlet (Subcritical) 1
0.40 0.54 Outlet (Subcritical) 2
0.60 0.81 Outlet (Subcritical) 2
0.80 1.10 Inlet (Supercritical) 3
1.00 1.41 Inlet (Supercritical) 4
1.20 1.73 Inlet (Supercritical) 4
1.40 2.03 Inlet 5
1.60 2.22 Inlet 5
1.80 2.42 Inlet 5
` 2.00 2.61 Inlet 5

Diameter:' 12 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Control
------------------------- Type
--------
0.20 0.33 Outlet (Subcritical) 1
0.40 0.65 Outlet (Subcritical) 2
0.60 0.98 Inlet (supercritical) 3
0.80 1.53 Inlet (Supercritical) 3
1.00 2.09 Inlet (Supercritical) 3
1.20 2.68 Inlet (Supercritical) 4
1.40 3.20 Inlet 5
1.60 3.63 Inlet 5
1.80 4.05 Inlet 5
2.00 4.39 Inlet 5
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Diameter: 15 inches
Headwater Discharge Flow
(ft) (cfs) Contr ol Type
-------------
0.20 ------------
0.38 --------
Outlet ----------------
(Subcritical) ---------
1
0.40 0.76 Outlet (Subcritical) 2
0.60
0.80 1.24
1.88 Inlet
Inlet (Supercritical)
(Supercritical) 3
3
1.00 2.63 Inlet (Supercritical) 3
1.20 3.45 inlet (Supercritical) 3
1.40 4.30 Inlet (Supercritical) 4
1.60 5.10 Inlet 5
1.80 5.78 Inlet 5
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