Road Stream Crossing Site AUS_CR027

Au Sable River Watershed, Tributary of East Branch Au Sable River
Grayling Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.73427 , -84.67414
T27N R03W Sec 16
Owned by State
Fish Passability 0.5
Total Erosion: 0.6218 tons/year
Severity: Moderate
Year Inventoried: 2013
Crossing Information
Type of Crossing: Other
Structure Shape: Ellipse
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Concrete
Structure Substrate: Gravel
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 74 ft. , Width 2.2 ft. , Height 1.6 ft.
Water Depth: 0 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: None
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 7 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
Dominant Substrate: Organics
Road Information
Paved State Road
Road Condition: Good
Road Width at Culvert: 33 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 6.1 ft.
Slope: More than 1:2
Fill Depth: 6 ft.
Slope: More than 1:2
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6218 tons/year
Length: 0 ft.
Slope: 0%
Vegetation: Heavy
LS Factor: 0
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.6218 tons/year
Extent of Erosion: Minor
Notes: Some gravel erosion from road shoulder.
Summary Information
Fish Passability 0.5