Road Stream Crossing Site PM_M087

Pere Marquette River Watershed, Swan Creek tributary
Scottville Rd
Eden Twp, Mason County
Information collected by:
Site Location
GPS Coordinates: 43.87348 , -86.27832
T17N R16W Sec 18
Owned by Private
Fish Passability 0.9
Total Erosion: 0.1058 tons/year
Severity: Minor
Year Inventoried: 2014
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: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 30 ft. , Width 9 ft. , Height 4 ft.
Structure Inlet
Water Depth: 0.3 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments
sand deposit building up in left side of inlet
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 8 ft.
Wetted Width: 4 ft.
Water Velocity: 0.3 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 22 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: Vertical
Downstream
Fill Depth: 2 ft.
Slope: Vertical
Approaches
Left Approach
Length: 150 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0055 tons/year
Right Approach
Length: 300 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.46
Erosion: 0.1004 tons/year
Erosion Information
Total Erosion at Crossing: 0.1058 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Knapweed