Road Stream Crossing Site TBW_TBMO201

Thunder Bay River Watershed, Grass Creek
Loafers Lane
Montmorency Twp, Montmorency County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 45.13161 , -84.005
T32N R3E Sec 25
Perch Height: 6 ft.
Total Erosion: 0.9453 tons/year
Severity: Moderate
Year Inventoried: 2017
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Dam
Structure Shape: Round
Inlet Type: Trash Rack
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 58 ft. , Width 4 ft. , Height 4 ft.
Percentage Plugged: Inlet: 1% to 25%
Perch Height: 6 ft.
Structure Inlet
Water Depth: 4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.3 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.6 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments
DAM INLET IS 8FT ROUND/OUTLET IS 4FT ROUND/RIFFLE NO SAFELY ACCESSIBLE
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 30 ft. , Width 28 ft. , Depth 3.3 ft.
Road Information
Sand Private Road
Road Condition: Fair
Road Width at Culvert: 12 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 5.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 9.3 ft.
Slope: 1:2
Approaches
Left Approach
Length: 300 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.46
Erosion: 0.4562 tons/year
Right Approach
Length: 319 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.464
Erosion: 0.4891 tons/year
Erosion Information
Total Erosion at Crossing: 0.9453 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Summary Information
Fish Passage is an area of concern for this site.
These non-native species were observerd at this site: Mullein, Spotted Knapweed, Autumn Olive