Road Stream Crossing Site CLHW_LBR-004
Little Black River Watershed, Little Black River
Goebel Rd
Beaugrand Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.67059
, -84.57038
T38N
R2W
Sec 20
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 0.6981 tons/year
Severity: Severe
Year Inventoried: 2016
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Round
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 4.8 ft.
, Height 4.8 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5 ft./sec.
Structure Outlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Additional Comments
2nd culvert is perched at 0.2 about water surface
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 45 ft.
, Width 36 ft.
, Depth 6 ft.
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 18 ft.
Wetted Width: 17 ft.
Water Velocity: 2.2 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3.3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.26
Erosion: 0 tons/year
Right Approach
Length: 280 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.452
Erosion: 0.6973 tons/year
Erosion Information
Total Erosion at Crossing: 0.6981 tons/year
Extent of Erosion: Minor
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Embankment |
8 ft. |
8 ft. |
0.1 ft. |
yes |
Sandy Loam |
0.0008 |
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Flow through culvert is too swift for fish passage
A future visit to this site is recommended. Flow through crossing could be greatly improved