Road Stream Crossing Site AUS_PR208A

Au Sable River Watershed, Tributary of Backus Creek
Sanborn Rd
Millen Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.65928 , -83.58494
T26N R07E Sec 3,4
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.9874 tons/year
Severity: Moderate
Year Inventoried: 2012
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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 46 ft. , Width 3 ft. , Height 3 ft.
Percentage Crushed: Inlet: 0% Outlet: 0% In Pipe: 26% to 50%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 10.5 ft. , Width 7.5 ft. , Depth 0.9 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 9.8 ft.
Wetted Width: 6 ft.
Water Velocity: 1.1 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 26.2 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4 ft.
Slope: 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4937 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4937 tons/year
Erosion Information
Total Erosion at Crossing: 0.9874 tons/year
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. To see if an upstream pond starts forming.
These non-native species were observerd at this site: Autumn Olive