HY-8 Culvert Analysis Report
Crossing Discharge Data
Discharge Selection Method: Specify Minimum, Design, and Maximum Flow
Minimum Flow: 1 cfs
Design Flow: 3.39 cfs
Maximum Flow: 3.5 cfs
Table 1 - Summary of Culvert Flows at Crossing: Crossing 1
Headwater Elevation Culvert 1 Discharge Roadway Discharge
Total Discharge (cfs) Iterations
(ft) (cfs) (cfs)
1710.58 1.00 1.#R 3.39 1000
0.00 1.25 0.00 0.00 0
0.00 1.50 0.00 0.00 0
0.00 1.75 0.00 0.00 0
0.00 2.00 0.00 0.00 0
0.00 2.25 0.00 0.00 0
0.00 2.50 0.00 0.00 0
0.00 2.75 0.00 0.00 0
0.00 3.00 0.00 0.00 0
0.00 3.25 0.00 0.00 0
0.00 3.39 0.00 0.00 0
1710.00 1.#R 1.#R 0.00 Overtopping
Rating Curve Plot for Crossing: Crossing 1
Table 2 - Culvert Summary Table: Culvert 1
Total Culvert Headwater Inlet Outlet Outlet Tailwater
Flow Normal Critical Outlet Tailwater
Discharge Discharge Elevation Control Control Velocity Velocity
Type Depth (ft) Depth (ft) Depth (ft) Depth (ft)
(cfs) (cfs) (ft) Depth (ft) Depth (ft) (ft/s) (ft/s)
1.00 1.#R 1710.58 0.000 0.000 0-NF 0.000 0.000 0.092 0.092 0.000 5.106
110628724
1.25 0.00 0.00 34.545 7-M1t 0.000 0.000 0.105 0.105 0.714 5.530
4.790
921906052
1.50 0.00 0.00 34.545 7-M1t 0.000 0.000 0.117 0.117 0.729 5.913
.511
790205208
1.75 0.00 0.00 34.545 7-M1t 0.000 0.000 0.128 0.128 0.741 6.246
.684
691429576
2.00 0.00 0.00 34.545 7-M1t 0.000 0.000 0.138 0.138 0.752 6.546
.528
614604073
2.25 0.00 0.00 34.545 7-M1t 0.000 0.000 0.148 0.148 0.762 6.822
.153
2.50 0.00 0.00 34.545 0.0* 3-M1t 0.000 0.000 0.158 0.158 0.014 7.077
2.75 0.00 0.00 34.545 0.0* 3-M1t 0.000 0.000 0.167 0.167 0.014 7.321
3.00 0.00 0.00 34.545 0.0* 3-M1t 0.000 0.000 0.176 0.176 0.015 7.542
3.25 0.00 0.00 34.545 0.000 3-M1t 0.000 0.000 0.184 0.184 0.796 7.753
3.39 0.00 0.00 34.545 0.000 3-M1t 0.000 0.000 0.189 0.189 0.799 7.858
* Full Flow Headwater elevation is below inlet invert.
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Straight Culvert
Inlet Elevation (invert): 1706.00 ft, Outlet Elevation (invert): 1692.00 ft
Culvert Length: 108000.00 ft, Culvert Slope: 0.0001
********************************************************************************
Culvert Performance Curve Plot: Culvert 1
Water Surface Profile Plot for Culvert: Culvert 1
Site Data - Culvert 1
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 1706.00 ft
Outlet Station: 108000.00 ft
Outlet Elevation: 1692.00 ft
Number of Barrels: 1
Culvert Data Summary - Culvert 1
Barrel Shape: Circular
Barrel Diameter: 1500.00 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0130
Culvert Type: Straight
Inlet Configuration: Square Edge with Headwall
Inlet Depression: NONE
Table 3 - Downstream Channel Rating Curve (Crossing: Crossing 1)
Water Surface
Flow (cfs) Depth (ft) Velocity (ft/s) Shear (psf) Froude Number
Elev (ft)
1.00 1692.09 0.09 5.11 1.14 3.07
1.25 1692.10 0.10 5.53 1.31 3.12
1.50 1692.12 0.12 5.91 1.46 3.17
1.75 1692.13 0.13 6.25 1.60 3.21
2.00 1692.14 0.14 6.55 1.73 3.24
2.25 1692.15 0.15 6.82 1.85 3.27
2.50 1692.16 0.16 7.08 1.97 3.30
2.75 1692.17 0.17 7.32 2.08 3.33
3.00 1692.18 0.18 7.54 2.19 3.35
3.25 1692.18 0.18 7.75 2.30 3.37
3.39 1692.19 0.19 7.86 2.36 3.38
Tailwater Channel Data - Crossing 1
Tailwater Channel Option: Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 1.50 (_:1)
Channel Slope: 0.2000
Channel Manning's n: 0.0250
Channel Invert Elevation: 1692.00 ft
Roadway Data for Crossing: Crossing 1
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 2.50 ft
Crest Elevation: 1710.00 ft
Roadway Surface: Gravel
Roadway Top Width: 1.00 ft
