Road Stream Crossing Site GTBAY_BRD008
Boardman River Watershed, Boardman River
Supply Road 660
Union Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.674675
, -85.396036
T26N
R9W
Sec 04
Owned by Private
Fish Passability 0
Total Erosion: 0.0808 tons/year
Severity: Severe
Year Inventoried: 2020
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Pipe Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
11.4 ft. |
61 ft. |
7.5 ft. |
Metal |
2 |
11.4 ft. |
61 ft. |
7.5 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 61 ft.
, Width 11.4 ft.
, Height 7.5 ft.
Structure Inlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.5 ft./sec.
Structure Outlet
Water Depth: 2.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.8 ft./sec.
*Water Velocities were measured 1.3 ft. below Surface
(with Meter)
Additional Comments
Water depth and velocity measurements recoreded for culvert #2
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 35 ft.
, Width 35 ft.
, Depth 5 ft.
Riffle Information
Water Depth: 2.8 ft.
Bankfull Width: 30 ft.
Wetted Width: 26 ft.
Water Velocity: 2.4 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 32 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: 1:1.5
Downstream
Fill Depth: 2 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 75 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.004 tons/year
Right Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.0635 tons/year
Erosion Information
Total Erosion at Crossing: 0.0808 tons/year
Extent of Erosion: Minor
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Upstream Embankment |
2 ft. |
1 ft. |
7 ft. |
yes |
Sandy Loam |
0.0134 |
Summary Information
Fish Passability 0