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 "N" 10 YEAR
Design Discharge 15.420
Entrance Loss Coefficient 0.9
Pipe Length = 60.000
Pipe Slope 9.000
~, Manning's n 0.024
Maximum Headwater 2.500
Tailwater Depth = 0.000
Smallest Diameter Required to Pass Flow is
PERFORMANCE CURVES:
Diameter: 21 inches
cfs
feet
3
feet
feet
24 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
----------- Contr
--------- ol
---------------- Type
---
--
0.25 0.59 Outlet (Subcritical) ----
2
0.50 1.32 Inlet (Supercritical) 3
' `~ ' ~` 0.75 ~ - 2.40" ""-Inlet (Supercritical)- - `3`~
. 1.00 3.67 Inlet. (Supercritical) 3 ..
1.25 5.12 Inlet (Supercritical) 3
1.50 6.74 Inlet (Supercritical) 3
1.75 8.49 Inlet (Supercritical) 3
2.00 10.31 Inlet (Supercritical) 4
2.25 11.90 Inlet 5
2.50 13.32 Inlet 5

Diameter: 24 inc hes
Headwater Discharge Flow
(ft)
------------- (cfs)
----------- Contr
--------- ol
---------------- Type
---
-----
0.25 0.65 Outlet (Subcritical) -
2
0.50 1.51 Inlet (Supercritical) 3
0.75 2.73 inlet (Supercritical) 3
1.00 4.19 Inlet (Supercritical) 3
1.25 5.86 Inlet (Supercritical) 3
1.50 7.70 Inlet (Supercritical) 3
1.75 9.70 Inlet (Supercritical) 3
2.00 11.85 Inlet (Supercritical) 3
2.25 14.13 Inlet (Supercritical) 3
2.50 16.09 Inlet 5

Diameter: 30 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
0.25 0.75 Outlet (Subcritical) 2
0.50 1.86. Inlet (Supercritical) 3
. 0.75
1.00 3.41
5.24 Inlet
Inlet (Supercritical)
(Supercritical) 3
3
1.25 7.32 Inlet (Supercritical) 3
1.50 9.62 Inlet (Supercritical) 3
1.75 12.12 Inlet (Supercritical) 3
2.00 14.81 Inlet (Supercritical) 3
2.25 17.67 Inlet (Supercritical) 3
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