Road Stream Crossing Site GTBAY_LEE035

West Bay Shoreline & Tributaries Watershed, Leo Creek
Elm Street
Suttons Bay Twp, Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.96754175 , -85.65428386
T30N R11W Sec 28
Owned by Local Government
Private
Fish Passability 0.9
Total Erosion: 0.3087 tons/year
Severity: Minor
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Square/Rectangle
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Gravel
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 27.9 ft. , Width 8.5 ft. , Height 3.2 ft.
Structure Inlet
Water Depth: 0.35 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured 0.7 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.7 ft.
Bankfull Width: 11.7 ft.
Wetted Width: 11.1 ft.
Water Velocity: 1.5 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved Town Road
Road Condition: Fair
Road Width at Culvert: 20.1 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.95 ft.
Slope: Vertical
Downstream
Fill Depth: 1.85 ft.
Slope: Vertical
Approaches
Left Approach
Length: 662 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.702
Erosion: 0.3087 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.3087 tons/year
Summary Information
Fish Passability 0.9