Road Stream Crossing Site GTBAY_LEE082
West Bay Shoreline & Tributaries Watershed, Unnamed
Dalzell
Elmwood Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.8193471
, -85.66412154
T28N
R11W
Sec 17
Owned by Private
Fish Passability 0.5
Total Erosion: 0.2199 tons/year
Severity: Moderate
Year Inventoried: 2020
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: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
2 ft. |
47.7 ft. |
2 ft. |
Metal |
2 |
2 ft. |
47.9 ft. |
2 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 47.7 ft.
, Width 2 ft.
, Height 2 ft.
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.8 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Additional Comments
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: 7.1 ft.
Wetted Width: 4.2 ft.
Water Velocity: 0.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
Town Road
Road Condition: Fair
Road Width at Culvert: 22.5 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.6 ft.
Slope: 1:2
Downstream
Fill Depth: 1.7 ft.
Slope: Less than 1:2
Approaches
Left Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0009 tons/year
Right Approach
Length: 544.5 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.509
Erosion: 0.2061 tons/year
Erosion Information
Total Erosion at Crossing: 0.2199 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) | |
Left Upstream Embankment |
2.4 ft. |
1.6 ft. |
1.5 ft. |
yes |
Sand |
0.004 |
Right Upstream Embankment |
2.3 ft. |
1.4 ft. |
3.5 ft. |
yes |
Sand |
0.0089 |
Summary Information
Fish Passability 0.5