Road Stream Crossing Site BEAR_BC071
Bear Creek Watershed
Lindroos Rd
Maple Grove Twp,
Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.39334
, -85.95356
T23N
R14W
Sec 13
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 2.1268 tons/year
Severity: Moderate
Year Inventoried: 2011
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: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 40 ft.
, Width 4.5 ft.
, Height 3.2 ft.
Percentage Crushed:
In Pipe: 1% to 25%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.07 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 0.05 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.6 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
Inlet set 0.9 feet above stream grade
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 20 ft.
, Width 14 ft.
, Depth 2 ft.
Upstream Pond: Length 8 ft.
, Width 6 ft.
, Depth 1 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 6 ft.
Wetted Width: 2.9 ft.
Water Velocity: 0.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2 ft.
Slope: 1:1
Downstream
Fill Depth: 1.5 ft.
Slope: 1:1
Approaches
Left Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.2755 tons/year
Right Approach
Length: 639 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.526
Erosion: 1.8513 tons/year
Erosion Information
Total Erosion at Crossing: 2.1268 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Road runoff creating minor erosion over top of inlet and outlet
Summary Information
Fish Passability 0.5