Road Stream Crossing Site AUS_PR122

Au Sable River Watershed, Tributary of Backus Creek
M-72
Gustin Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.65551 , -83.51564
T26N R08E Sec 7,18
Owned by Private
Federal
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 0.8008 tons/year
Severity: Moderate
Year Inventoried: 2013
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 138.5 ft. , Width 3 ft. , Height 3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.8 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 8.6 ft.
Wetted Width: 6 ft.
Water Velocity: 0.7 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved State Road
Road Condition: Good
Road Width at Culvert: 42.5 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 20 ft.
Slope: More than 1:2
Downstream
Fill Depth: 10 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.8008 tons/year
Erosion Information
Total Erosion at Crossing: 0.8008 tons/year
Summary Information
Fish Passability 0.9
Fish Passage is an area of concern for this site. The culvert is very long, possibly posing a fish passage barrier.
A future visit to this site is recommended. To evaluate if the culvert is too long and posing a fish passage barrier.
These non-native species were observerd at this site: Spotted Knapweed, Reed Canarygrass?