Road Stream Crossing Site GTBAY_LEE084
West Bay Shoreline & Tributaries Watershed, Unnamed
Cherry Bend Rd
Elmwood Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.81152025
, -85.65627096
T28N
R11W
Sec 20
Owned by Private
Total Erosion: 0.03 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: 2
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
2 ft. |
48.5 ft. |
2.1 ft. |
Metal |
2 |
2 ft. |
48.8 ft. |
2 ft. |
Metal |
Structure Interior: corrugated
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 1.3 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.45 ft.
Bankfull Width: 11.6 ft.
Wetted Width: 4.3 ft.
Water Velocity: 3 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 27.7 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.7 ft.
Slope: 1:1
Downstream
Fill Depth: 3.8 ft.
Slope: 1:1
Approaches
Left Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0011 tons/year
Right Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0011 tons/year
Erosion Information
Total Erosion at Crossing: 0.03 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 Downstream Embankment |
2.4 ft. |
1.8 ft. |
1.5 ft. |
yes |
Sand |
0.0277 |
Summary Information
Erosion is an area of concern for this site.
From road runoff
These non-native species were observerd at this site: Queen Anne's Lace, Bladder Campion