Road Stream Crossing Site GTBAY_LEE018
West Bay Shoreline & Tributaries Watershed, Belanger's Creek
Omena
Leelanau Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 45.05695629
, -85.62476121
T31N
R11W
Sec 27
Owned by Private
Total Erosion: 0.4297 tons/year
Severity: Moderate
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: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 49.1 ft.
, Width 3 ft.
, Height 3 ft.
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 24.1 ft.
Wetted Width: 6.2 ft.
Water Velocity: 1 ft./sec.
(Measured with Meter)
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 23.6 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.25 ft.
Slope: 1:2
Downstream
Fill Depth: 2.4 ft.
Slope: 1:2
Approaches
Left Approach
Length: 580.8 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.516
Erosion: 0.2339 tons/year
Right Approach
Length: 483 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.497
Erosion: 0.1871 tons/year
Erosion Information
Total Erosion at Crossing: 0.4297 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 |
3.5 ft. |
1.8 ft. |
2.6 ft. |
yes |
Sandy Loam |
0.0087 |
Summary Information
Erosion is an area of concern for this site.
These non-native species were observerd at this site: Queen Anne's Lace, Spotted Knapweed