Road Stream Crossing Site TBW_TBMO02

Thunder Bay River Watershed, Thunder Bay River tributary
Fritz Road
Briley Twp, Montmorency County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.96935 , -84.21567
T30N R2E Sec 29
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 4.5896 tons/year
Severity: Severe
Year Inventoried: 2017
Inlet
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 21 ft. , Width 1.3 ft. , Height 1.3 ft.
Percentage Crushed: Inlet: 0% Outlet: 26% to 50% In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.2 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface (with Meter)
Stream Information
Stream Flow: Bankfull
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 7 ft.
Wetted Width: 5.1 ft.
Water Velocity: 1.2 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 16 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 3.6 ft.
Slope: 1:1.5
Downstream
Fill Depth: 4.5 ft.
Slope: Vertical
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: None
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 890 ft.
Slope: 1% to 5%
Vegetation: None
LS Factor: 1.159
Erosion: 4.5446 tons/year
Erosion Information
Total Erosion at Crossing: 4.5896 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: ROAD SURFACE MATERIAL
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Upstream Embankment
60 ft.
7 ft.
0.5 ft.
yes
Gravel
0.03
Left Downstream Embankment
30 ft.
4.5 ft.
0.5 ft.
yes
Gravel
0.015
Summary Information
Fish Passability 0.5
Erosion is an area of concern for this site. Not priority
A future visit to this site is recommended. Possible erosion issue