Road Stream Crossing Site GTBAY_LEE033
West Bay Shoreline & Tributaries Watershed, Leo Creek
Center Rd
Suttons Bay Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.95463739
, -85.65413676
T30N
R11W
Sec 33
Owned by Private
Fish Passability 0.9
Total Erosion: 0 tons/year
Severity: Minor
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 35.7 ft.
, Width 7.8 ft.
, Height 2.5 ft.
Structure Inlet
Water Depth: 2.15 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured 1.5 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.7 ft.
Bankfull Width: 13 ft.
Wetted Width: 9.7 ft.
Water Velocity: 0.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 29.7 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.85 ft.
Slope: Vertical
Downstream
Fill Depth: 2.7 ft.
Slope: Vertical
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0 tons/year
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 Downstream Embankment |
1.5 ft. |
1.2 ft. |
1.3 ft. |
yes |
Sand |
|
Left Upstream Embankment |
1.9 ft. |
2.3 ft. |
2.2 ft. |
yes |
Sand |
|
Summary Information
Fish Passability 0.9
Erosion is an area of concern for this site.
These non-native species were observerd at this site: Spotted Knapweed, Queen Anne's Lace, Invasive Cattails