Road Stream Crossing Site GTBAY_LEE038
West Bay Shoreline & Tributaries Watershed, Unnamed
St. Mary's
Suttons Bay Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.97731379
, -85.65238788
T30N
R11W
Sec 28
Owned by Local Government
Private
Private
Fish Passability 0
Perch Height: 0.5 ft.
Total Erosion: 0.0028 tons/year
Severity: Severe
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: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 170.7 ft.
, Width 1 ft.
, Height 1 ft.
Perch Height: 0.5 ft.
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.1 ft./sec.
Structure Outlet
Water Depth: 0.35 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.5 ft./sec.
*Water Velocities were measured 0.15 ft. below Surface
(with Meter)
Additional Comments
1' inlet but 1.3' outlet. Crosses Road and driveway
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 10.2 ft.
Wetted Width: 1.6 ft.
Water Velocity: 3.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
Road Condition: Fair
Road Width at Culvert: 34.3 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.3 ft.
Slope: Less than 1:2
Downstream
Fill Depth: 1.4 ft.
Slope: Vertical
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
Fish Passage is an area of concern for this site.
Perched culvert
These non-native species were observerd at this site: Queen Anne's Lace