Road Stream Crossing Site LTB-261

Little Traverse Bay Watershed, Gimlet Creek tributary
Fiel Road (2-track)
Melrose Twp, Charlevoix County
Information collected by:
Tip of the Mitt Watershed Council
Site Location
GPS Coordinates: 45.21840019 , -84.87738876
Sec 26
Owned by State
Fish Passability 0.9
Total Erosion: 0.2722 tons/year
Severity: Minor
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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 25 ft. , Width 1.81 ft. , Height 1.1 ft.
Percentage Plugged: Inlet: 0% Outlet: 0% In Pipe: 0%
Percentage Crushed: In Pipe: 26% to 50%
Structure Inlet
Water Depth: 0.3 ft.
Water Velocity*: 0.7 ft./sec.
Structure Outlet
Water Depth: 0.25 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
*Water Velocities were measured 0.6 ft. below Surface (with Meter)
Additional Comments
Old site ID: C-25.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.75 ft.
Bankfull Width: 5.9 ft.
Water Velocity: 0.597 ft./sec. (Measured with Meter)
Dominant Substrate: sand/organics
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 13 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2 ft.
Slope: 1:1.5
Downstream
Fill Depth: 2 ft.
Slope: 1:2
Approaches
Left Approach
Length: 100 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.38
Erosion: 0.1361 tons/year
Right Approach
Length: 100 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.38
Erosion: 0.1361 tons/year
Erosion Information
Total Erosion at Crossing: 0.2722 tons/year
Notes: Runoff path includes BOTH the roadway and the ditch.
Summary Information
Fish Passability 0.9