Road Stream Crossing Site TBW_TBMO202

Thunder Bay River Watershed, Long Lake Creek
County Road 628
Montmorency Twp, Montmorency County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 45.1472424194354 , -83.9780553203094
T32N R4E Sec 20
Structure is NOT Perched
Total Erosion: 2.3057 tons/year
Severity: Moderate
Year Inventoried: 2017
Site ID
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Fair
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 42 ft. , Width 7 ft. , Height 5.2 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.7 ft./sec.
Structure Outlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0.6 ft.
Water Velocity*: 2.2 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 1.3 ft.
Bankfull Width: 18 ft.
Wetted Width: 16.3 ft.
Water Velocity: 0.8 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Sand County Road
Road Condition: Fair
Road Width at Culvert: 27.5 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 0.6 ft.
Slope: Vertical
Fill Depth: 0.6 ft.
Slope: More than 1:2
Left Approach
Length: 0 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.26
Erosion: 0 tons/year
Right Approach
Length: 588 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.518
Erosion: 2.3057 tons/year
Erosion Information
Total Erosion at Crossing: 2.3057 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Summary Information
Erosion is an area of concern for this site.
A future visit to this site is recommended.


These non-native species were observerd at this site: Spotted Knapweed and Autumn Olive