Road Stream Crossing Site AUS_CR022

Au Sable River Watershed, Tributary of East Branch Au Sable River
Grayling Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.73757 , -84.65638
T27N R03W Sec 15
Owned by State
Fish Passability 0.5
Total Erosion: 0.5447 tons/year
Severity: Moderate
Year Inventoried: 2013
Crossing Information
Type of Crossing: Other
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Concrete
Structure Substrate: mixture
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 74 ft. , Width 2.2 ft. , Height 1.1 ft.
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 43 ft.
Wetted Width: 36 ft.
Water Velocity: 0 ft./sec. (Measured with Float Test)
Dominant Substrate: Silt
Road Information
Paved State Road
Road Condition: Good
Road Width at Culvert: 44 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 2.1 ft.
Slope: More than 1:2
Fill Depth: 6 ft.
Slope: More than 1:2
Length: 0 ft.
Slope: 0%
Vegetation: Heavy
LS Factor: 0
Erosion: 0 tons/year
Right Approach
Length: 700 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.535
Erosion: 0.5447 tons/year
Erosion Information
Total Erosion at Crossing: 0.5447 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. To unplug the culvert
These non-native species were observerd at this site: Queen Anne's Lace, Spotted Knapweed