Road Stream Crossing Site GTBAY_LEE101
West Bay Shoreline & Tributaries Watershed, Ennis Creek
Across from Lee Mann Rd
Leelanau Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 45.10147157
, -85.6029639
T31N
R11W
Sec 11
Owned by Private
Fish Passability 0
Perch Height: 0.2 ft.
Total Erosion: 0.5825 tons/year
Severity: Severe
Year Inventoried: 2020
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
3.5 ft. |
48.3 ft. |
2.4 ft. |
Metal |
2 |
3.45 ft. |
48.3 ft. |
2.4 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 48.3 ft.
, Width 3.5 ft.
, Height 2.4 ft.
Perch Height: 0.2 ft.
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.9 ft./sec.
*Water Velocities were measured 0.1 ft. below Surface
(with Meter)
Additional Comments
Bank Owned Development, Water depth and velocity recorded for culvert #2
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 13.8 ft.
Wetted Width: 7.5 ft.
Water Velocity: 0.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Sand
Private Road
Road Condition: Fair
Road Width at Culvert: 8.3 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.65 ft.
Slope: Vertical
Downstream
Fill Depth: 2.5 ft.
Slope: 1:2
Approaches
Left Approach
Length: 247.5 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.2487 tons/year
Right Approach
Length: 300.3 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.46
Erosion: 0.3159 tons/year
Erosion Information
Total Erosion at Crossing: 0.5825 tons/year
Extent of Erosion: Moderate
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 |
1.9 ft. |
4.6 ft. |
1.4 ft. |
yes |
Sandy Loam |
0.0179 |
Summary Information
Fish Passability 0
Erosion is an area of concern for this site.