Road Stream Crossing Site GTBAY_LEE006
West Bay Shoreline & Tributaries Watershed, Unnamed
Carter Rd
Elmwood Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.78068465
, -85.64654795
T28N
R11W
Sec 33
Owned by Private
Fish Passability 0
Total Erosion: 0.9558 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: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 38.9 ft.
, Width 1.15 ft.
, Height 1.15 ft.
Structure Inlet
Water Depth: 0.25 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.9 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.4 ft./sec.
*Water Velocities were measured 0.1 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 4.7 ft.
Wetted Width: 2.5 ft.
Water Velocity: 0.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Paved
Town Road
Road Condition: Fair
Road Width at Culvert: 21.6 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 0.9 ft.
Slope: Less than 1:2
Downstream
Fill Depth: 3.1 ft.
Slope: 1:1
Approaches
Left Approach
Length: 521 ft.
Slope: 6% to 10%
Vegetation: Partial
LS Factor: 2.296
Erosion: 0.8542 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.9558 tons/year
Extent of Erosion: Severe
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Erosion nearly covering outlet
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Embankment |
3.3 ft. |
4.4 ft. |
1.4 ft. |
yes |
Sand |
0.1016 |
Summary Information
Fish Passability 0
Erosion is an area of concern for this site.