Road Stream Crossing Site LM074

Manistee River Watershed, Stronach Creek
W 11 Mile Rd
Elk Twp, Lake County
Information collected by:
Site Location
GPS Coordinates: 44.149256 , -86.015742
T20N R14W Sec 4
Fish Passability 0
Total Erosion: 0.0614 tons/year
Severity: Severe
Year Inventoried: 2019
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 3
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Good
Multiple Culverts/Spans
Culvert/Span
Width
Length
Height
Material
1
4.5 ft.
61 ft.
4.5 ft.
Metal
2
4.5 ft.
61 ft.
4.5 ft.
Metal
3
4.5 ft.
61 ft.
4.5 ft.
Metal
Structure Interior: corrugated
Dimensions of Structure: Length 61 ft. , Width 4.5 ft. , Height 4.5 ft.
Structure Inlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5 ft./sec.
Structure Outlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.5 ft./sec.
*Water Velocities were measured 0.8 ft. below Surface (with Meter)
Additional Comments
Additional notes due to extreme flooding; differing riffle locations; values culvert 2
Stream Information
Stream Flow: Bankfull
Scour Pool: Length 30 ft. , Width 30 ft. , Depth 5 ft.
Riffle Information
Water Depth: 1.2 ft.
Bankfull Width: 23.5 ft.
Wetted Width: 23.5 ft.
Water Velocity: 1.8 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 21 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 5 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 200 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.43
Erosion: 0.0597 tons/year
Right Approach
Length: 50 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0017 tons/year
Erosion Information
Total Erosion at Crossing: 0.0614 tons/year
Summary Information
Fish Passability 0
These non-native species were observerd at this site: Knappweed