Road Stream Crossing Site GTBAY_LEE108
West Bay Shoreline & Tributaries Watershed, Cedar Creek
Lincoln Rd
Elmwood Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.79752583
, -85.662317
T28N
R11W
Sec 29
Owned by Private
Perch Height: 4 ft.
Total Erosion: 2.8713 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: Freefall into Pool
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 61.4 ft.
, Width 3 ft.
, Height 2.8 ft.
Perch Height: 4 ft.
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Embedded Depth of Structure: 0.6 ft.
Water Velocity*: 0 ft./sec.
(with Float Test)
Stream Information
Stream Flow: None
Riffle Information
Water Depth: 0.25 ft.
Bankfull Width: 10.5 ft.
Wetted Width: 2.2 ft.
Water Velocity: 0.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
Town Road
Road Condition: Good
Road Width at Culvert: 28.7 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4.5 ft.
Slope: 1:1
Downstream
Fill Depth: 5.45 ft.
Slope: 1:1
Approaches
Left Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0012 tons/year
Right Approach
Length: 458 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.623
Erosion: 0.2708 tons/year
Erosion Information
Total Erosion at Crossing: 2.8713 tons/year
Extent of Erosion: Severe
Erosion is occurring and corrective actions can be installed to address the problem.
Notes:
Lots of erosion under and on right of culvert
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Upstream Embankment |
7.6 ft. |
2.2 ft. |
12 ft. |
yes |
Sand |
2.0064 |
Left Downstream Embankment |
3.5 ft. |
1.4 ft. |
7.7 ft. |
yes |
Sand |
0.5929 |
Summary Information
Erosion is an area of concern for this site.
Heavy erosion