Road Stream Crossing Site TBW_TBMO198

Thunder Bay River Watershed, Brush Creek
Bertha Road
Hillman Twp, Montmorency County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 45.04498 , -83.94791
T31N R4E Sec 23
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.5746 tons/year
Severity: Moderate
Year Inventoried: 2017
Site ID
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Rock
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 12.5 ft. , Width 31 ft. , Height 7 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
Structure Outlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.4 ft./sec.
*Water Velocities were measured 1 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 2.1 ft.
Bankfull Width: 15 ft.
Wetted Width: 12.5 ft.
Water Velocity: 1.6 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Sand Private Road
Road Condition: Fair
Road Width at Culvert: 12.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Left Approach
Length: 110 ft.
Slope: 6% to 10%
Vegetation: Partial
LS Factor: 1.084
Erosion: 0.4106 tons/year
Right Approach
Length: 117 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.407
Erosion: 0.164 tons/year
Erosion Information
Total Erosion at Crossing: 0.5746 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. CONDITION OF FILL UNDER THE BRIDGE
These non-native species were observerd at this site: Queen Anne's Lace and Spotted Knapweed