Road Stream Crossing Site TBW_TBAP221
Thunder Bay River Watershed, Bean Creek
Atkinson Road
Long Rapids Twp,
Alpena County
Information collected by:
Site Location
GPS Coordinates: 45.08537
, -83.69382
T31N
R6E
Sec 15
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 4.8678 tons/year
Severity: Severe
Year Inventoried: 2017
Site ID
Inlet
Outlet
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: Concrete
Structure Substrate: Rock
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 31 ft.
, Width 49 ft.
, Height 10.3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 1.3 ft.
Water Velocity*: 1.5 ft./sec.
*Water Velocities were measured 0.7 ft. below Surface
(with Meter)
Additional Comments
RIPRAP WATERFALL IN STRUCTURE, BEAVER VISIBLE IMMEDIATELY DOWNSTREAM
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 20 ft.
, Width 30 ft.
, Depth 5 ft.
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 26 ft.
Wetted Width: 22 ft.
Water Velocity: 1 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Sand
County Road
Road Condition: Fair
Road Width at Culvert: 31 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 0 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.26
Erosion: 0 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 4.8678 tons/year
Erosion Information
Total Erosion at Crossing: 4.8678 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Glossy Buckthorn, Reed Canary Grass, Autumn Olive, Spotted Knapweed, and Queen Anne's Lace