Road Stream Crossing Site AUS_CR050

Au Sable River Watershed, Barker Creek (West)
Dyer Truck Trail
Grayling Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.69869 , -84.49741
T27N R03W Sec 36
Owned by State
Fish Passability 0.5
Total Erosion: 3.0252 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 20 ft. , Width 1.6 ft. , Height 1.4 ft.
Percentage Crushed: Inlet: 1% to 25% In Pipe: 1% to 25%
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 1.3 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 1.8 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 10 ft.
Wetted Width: 6 ft.
Water Velocity: 0.32 ft./sec. (Measured with Float Test)
Dominant Substrate: Silt
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 16.2 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0.8 ft.
Slope: More than 1:2
Fill Depth: 1 ft.
Slope: More than 1:2
Left Approach
Length: 230 ft.
Slope: 6% to 10%
Vegetation: Partial
LS Factor: 1.552
Erosion: 1.593 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.64
Erosion: 1.4281 tons/year
Erosion Information
Total Erosion at Crossing: 3.0252 tons/year
Extent of Erosion: Minor
Notes: Erosion mainly over culverts
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Reaching Stream?
Left Downstream
6.5 ft.
3 ft.
0.3 ft.
Left Upstream
7 ft.
3 ft.
0.3 ft.
Summary Information
Fish Passability 0.5
Erosion is an area of concern for this site. Minor erosion could turn in to severe erosion problem directly over culverts.
A future visit to this site is recommended. To assess erosion sites.