Road Stream Crossing Site BEAR_BC068

Bear Creek Watershed, Little Beaver Creek
Unimproved Road west of McClellen
Maple Grove Twp, Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.3512889909299 , -86.0741901397705
T23N R14W Sec 30
Owned by Private
Structure is NOT Perched
Total Erosion: 0.2204 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: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 45 ft. , Width 4 ft. , Height 4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.81 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.7 ft./sec.
*Water Velocities were measured 0.49 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 10 ft. , Width 10 ft. , Depth 2.05 ft.
Riffle Information
Water Depth: 0.46 ft.
Bankfull Width: 6.2 ft.
Wetted Width: 5.6 ft.
Water Velocity: 1.1 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 8 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.8 ft.
Slope: Vertical
Downstream
Fill Depth: 3.2 ft.
Slope: 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.1102 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.1102 tons/year
Erosion Information
Total Erosion at Crossing: 0.2204 tons/year
Extent of Erosion: Minor
Notes:

Minor embankment erosion due to lacking vegeatation

Summary Information
Erosion is an area of concern for this site.

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