Road Stream Crossing Site BEAR_BC110
Bear Creek Watershed, Little Bear Creek
8 Mile Rd
Bear Lake Twp,
Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.35796
, -86.09989
T23N
R15W
Sec 26
Owned by Private
Structure is NOT Perched
Total Erosion: 3.2628 tons/year
Severity: Moderate
Year Inventoried: 2011
Contact Point
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Outlet
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: New
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
4 ft. |
57 ft. |
2.8 ft. |
Metal |
2 |
4 ft. |
57 ft. |
2.8 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 57 ft.
, Width 4 ft.
, Height 2.8 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 1.5 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 1.1 ft.
Embedded Depth of Structure: 1.6 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Additional Comments
New culvert 2014. Culvert #1 was used to collect structure data.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 16.5 ft.
, Width 25 ft.
, Depth 1.5 ft.
Upstream Pond: Length 23 ft.
, Width 27 ft.
, Depth 1.5 ft.
Riffle Information
Water Depth: 0.29 ft.
Bankfull Width: 8.3 ft.
Wetted Width: 5 ft.
Water Velocity: 0.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 0.6 ft.
Slope: More than 1:2
Downstream
Fill Depth: 0.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 300 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.1405 tons/year
Right Approach
Length: 450 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.1223 tons/year
Erosion Information
Total Erosion at Crossing: 3.2628 tons/year
Extent of Erosion: Minor
Summary Information
Erosion is an area of concern for this site.