Road Stream Crossing Site AUS_PR125
Au Sable River Watershed, Backus Creek
Walker Rd
Millen Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.669
, -83.58251
T26N
R07E
Sec 3,10
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 4.7775 tons/year
Severity: Severe
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: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 35.5 ft.
, Width 3 ft.
, Height 3 ft.
Percentage Crushed:
Inlet: 0%
Outlet: 0%
In Pipe: 1% to 25%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.1 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: 0.1 ft.
Bankfull Width: 6.8 ft.
Wetted Width: 3.4 ft.
Water Velocity: 0.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Sand
County Road
Road Condition: Good
Road Width at Culvert: 19.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.7 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.062 tons/year
Right Approach
Length: 612 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.522
Erosion: 1.7155 tons/year
Erosion Information
Total Erosion at Crossing: 4.7775 tons/year
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. To see what is causing the downstream pool and see if it's getting worse/larger.
These non-native species were observerd at this site: Wild parsnip, honeysuckle, Reed Canarygrass?