Road Stream Crossing Site GTBAY_LEE009
West Bay Shoreline & Tributaries Watershed, Unnamed
Grandview Rd
Elmwood Twp,
Leelanau County
Information collected by:
Site Location
GPS Coordinates: 44.78987005
, -85.64462179
T28N
R11W
Sec 28
Owned by Private
Fish Passability 0
Perch Height: 0.7 ft.
Severity: Severe
Year Inventoried: 2020
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: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 47.2 ft.
, Width 10.7 ft.
, Height 2.5 ft.
Perch Height: 0.7 ft.
Structure Inlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 7.1 ft./sec.
Structure Outlet
Water Depth: 0.25 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 13.1 ft./sec.
*Water Velocities were measured 0.125 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 14.1 ft.
, Width 10.7 ft.
, Depth 1.2 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 13.9 ft.
Wetted Width: 10.7 ft.
Water Velocity: 3.9 ft./sec.
Dominant Substrate: Gravel
Road Information
Paved
Town Road
Road Condition: Fair
Road Width at Culvert: 28.9 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.8 ft.
Slope: Vertical
Downstream
Fill Depth: 1.9 ft.
Slope: Vertical
Length: 0 ft.
Length: 508.2 ft.
Slope: 6% to 10%
Erosion Information
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) | |
Left Upstream Embankment |
2.8 ft. |
5.2 ft. |
3.1 ft. |
yes |
Sand |
0.0668 |
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Perched culvert inhibits fish passage+ moderate erosion present