Road Stream Crossing Site GTBAY_LEE089

West Bay Shoreline & Tributaries Watershed, Unnamed
Cherry Bend Rd
Elmwood Twp, Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.79561559 , -85.64991186
T28N R11W Sec 28
Owned by Local Government
Private
Fish Passability 0.5
Total Erosion: 0.0028 tons/year
Severity: Moderate
Year Inventoried: 2020
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: Projecting
Outlet Type: Cascade over Riprap
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 51.8 ft. , Width 3.7 ft. , Height 3.3 ft.
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.8 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface (with Meter)
Additional Comments
Check structure velocities. Based on check, change velocities as follows: Inlet: 2.8 ft/sec, Oulet: 2.0 ft/sec. Change passability to .5. change severity to Moderate
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 6.6 ft.
Wetted Width: 3.1 ft.
Water Velocity: 2.6 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Fair
Road Width at Culvert: 33.9 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.1 ft.
Slope: Less than 1:2
Downstream
Fill Depth: 1.8 ft.
Slope: Less than 1:2
Approaches
Left Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0014 tons/year
Right Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0014 tons/year
Erosion Information
Total Erosion at Crossing: 0.0028 tons/year
Summary Information
Fish Passability 0.5