Road Stream Crossing Site LM073
Manistee River Watershed, Stronach Creek
W 11 Mile Rd
Elk Twp,
Lake County
Information collected by:
Site Location
GPS Coordinates: 44.148632
, -86.00003
T20N
R14W
Sec 4
Owned by State
Fish Passability 0.9
Total Erosion: 0.0884 tons/year
Severity: Minor
Year Inventoried: 2019
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 11.5 ft.
, Width 56.5 ft.
, Height 4 ft.
Percentage Plugged:
Structure Inlet
Water Depth: 4.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 4.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
*Water Velocities were measured 1.5 ft. below Surface
(with Meter)
Additional Comments
Additional notes due to extreme flooding; passage flooded on both occassions
Stream Information
Stream Flow: Bankfull
Riffle Information
Water Depth: 2.5 ft.
Bankfull Width: 12 ft.
Wetted Width: 12 ft.
Water Velocity: 0.2 ft./sec.
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 23.5 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 250 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.0855 tons/year
Right Approach
Length: 75 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0029 tons/year
Erosion Information
Total Erosion at Crossing: 0.0884 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Autumn Olive and Knappweed