Road Stream Crossing Site Boyne_WA-11
Lake Charlevoix Watershed, Boyne River South Branch
Dobleski Road
Antrim County
Information collected by:
Site Location
GPS Coordinates: 45.1014445922904
, -84.8837379980297
Fish Passability 0.5
Total Erosion: 8.2094 tons/year
Severity: Severe
Year Inventoried: 2015
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Material: Concrete
General Conditions: Good
Dimensions of Structure: Length 27 ft.
, Width 15 ft.
, Height 5 ft.
Structure Inlet
Water Depth: 0.75 ft.
Water Velocity*: 2.45 ft./sec.
Structure Outlet
Water Depth: 0.65 ft.
Water Velocity*: 2.55 ft./sec.
*Water Velocities were measured 0.45 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 1.55 ft.
Bankfull Width: 10.5 ft.
Wetted Width: 10 ft.
Water Velocity: 1.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 25 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Approaches
Left Approach
Length: 700 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.535
Erosion: 2.5792 tons/year
Right Approach
Length: 500 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.635
Erosion: 5.6302 tons/year
Erosion Information
Total Erosion at Crossing: 8.2094 tons/year
Summary Information
Fish Passability 0.5