Road Stream Crossing Site MAN_WE_034

Big Manistee River Watershed, Unknown (tributary to Manistee River)
18 1/2 Rd
Antioch Twp, Wexford County
Information collected by:
Site Location
GPS Coordinates: 44.38851 , -85.69661
T23N R11W Sec 18
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 2.0941 tons/year
Severity: Moderate
Year Inventoried: 2014
Site ID
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: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: None
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 42 ft. , Width 2 ft. , Height 2 ft.
Percentage Plugged: Inlet: 51% to 75% Outlet: 0% In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 1 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Embedded Depth of Structure: 1.2 ft.
Water Velocity*: 0.4 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: 0.3 ft.
Bankfull Width: 10 ft.
Wetted Width: 1.4 ft.
Water Velocity: 0.4 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 23 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3.7 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 450 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.49
Erosion: 1.3971 tons/year
Right Approach
Length: 250 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.697 tons/year
Erosion Information
Total Erosion at Crossing: 2.0941 tons/year
Summary Information
Fish Passability 0.5

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