Road Stream Crossing Site AUS_CR048

Au Sable River Watershed, Barker Creek (East)
Dyer Truck Trail
Grayling Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.69876 , -84.48988
T27N R02W Sec 36
Owned by State
Fish Passability 0.5
Total Erosion: 6.8694 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 30 ft. , Width 1.3 ft. , Height 1.3 ft.
Structure Inlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.38 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.5 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 10 ft. , Width 12.5 ft. , Depth 0.9 ft.
Upstream Pond: Length 20 ft. , Width 43 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 13 ft.
Wetted Width: 10 ft.
Water Velocity: 0.83 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 17.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 1.4 ft.
Slope: More than 1:2
Fill Depth: 1 ft.
Slope: More than 1:2
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.8
Erosion: 3.8567 tons/year
Right Approach
Length: 809 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.752
Erosion: 2.9339 tons/year
Erosion Information
Total Erosion at Crossing: 6.8694 tons/year
Extent of Erosion: Moderate
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Reaching Stream?
Right Downstream
16 ft.
6 ft.
0.3 ft.
Left Upstream
14 ft.
5 ft.
0.3 ft.
Right Upstream
7.5 ft.
4 ft.
0.3 ft.
Summary Information
Fish Passability 0.5
Erosion is an area of concern for this site. Moderate erosion above culvert upstream and downstream.
A future visit to this site is recommended. To check erosion/trash rack on upstream side of culvert.