Road Stream Crossing Site AUS_PR124

Au Sable River Watershed, Backus Creek
Sanborn Rd
Millen Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.67165 , -83.58549
T26N R07E Sec 3,4
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.7614 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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft. , Width 4 ft. , Height 4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.6 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments
The inlet is perched.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 6 ft. , Width 9 ft. , Depth 0.6 ft.
Upstream Pond: Length 11 ft. , Width 18 ft. , Depth 1.2 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 9.5 ft.
Wetted Width: 4.5 ft.
Water Velocity: 0.5 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 23.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4428 tons/year
Right Approach
Length: 755 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.543
Erosion: 0.3186 tons/year
Erosion Information
Total Erosion at Crossing: 0.7614 tons/year
Summary Information
Fish Passability 0.5
Fish Passage is an area of concern for this site. Yes, the inlet is not at stream grade and allows barely any water through.
A future visit to this site is recommended. The inlet is not at stream grad and allows barely any water through. Also there is a scour pool and an upstream pond.
These non-native species were observerd at this site: Honeysuckle, reed canary grass?