Road Stream Crossing Site PM_L001

Pere Marquette River Watershed, Middle Branch tributary
W Stevensen Rd
Sweetwater Twp, Lake County
Information collected by:
Site Location
GPS Coordinates: 43.93885 , -86.03712
T18N R14W Sec 19
Owned by Private
Total Erosion: 0.3372 tons/year
Severity: Moderate
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: Ellipse
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Concrete
Structure Substrate: None
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 60 ft. , Width 4.5 ft. , Height 3 ft.
Structure Inlet
Water Depth: 0.2 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments

ditch crossing

Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 6 ft.
Wetted Width: 4 ft.
Water Velocity: 0.2 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 25 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: 1:2
Downstream
Fill Depth: 3 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 480 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.496
Erosion: 0.1968 tons/year
Right Approach
Length: 360 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.472
Erosion: 0.1404 tons/year
Erosion Information
Total Erosion at Crossing: 0.3372 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.
These non-native species were observerd at this site: Knapweed