Road Stream Crossing Site GTBAY_LEE045
West Bay Shoreline & Tributaries Watershed, Unnamed
Jacobson Rd
Suttons Bay Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 45.00487626
, -85.63336993
T30N
R11W
Sec 15
Owned by Private
Fish Passability 0
Perch Height: 1.2 ft.
Total Erosion: 0.2454 tons/year
Severity: Severe
Year Inventoried: 2020
Inlet
Outlet
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 35.1 ft.
, Width 1.3 ft.
, Height 1.3 ft.
Perch Height: 1.2 ft.
Structure Inlet
Water Depth: 0.15 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 11.4 ft.
, Width 8.1 ft.
, Depth 1.1 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 3.2 ft.
Wetted Width: 2.1 ft.
Water Velocity: 1.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 29 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.8 ft.
Slope: 1:2
Downstream
Fill Depth: 3.2 ft.
Slope: 1:2
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.2397 tons/year
Right Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0012 tons/year
Erosion Information
Total Erosion at Crossing: 0.2454 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Upstream Embankment |
1.6 ft. |
1 ft. |
1.9 ft. |
yes |
Sandy Loam |
0.0029 |
Right Downstream Embankment |
1.2 ft. |
2.4 ft. |
1.4 ft. |
yes |
Sandy Loam |
0.0016 |
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
perched culvert