Road Stream Crossing Site CLHW_LBR-006
Little Black River Watershed, Little Black River
Slade Rd
Beaugrand Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.65848
, -84.50834
T38N
R2W
Sec 25
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 0.2882 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: 1
Structure Shape: Pipe Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 64 ft.
, Width 11 ft.
, Height 8.1 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.9 ft./sec.
Structure Outlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.9 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 54 ft.
, Width 28 ft.
, Depth 6 ft.
Riffle Information
Water Depth: 2.2 ft.
Bankfull Width: 18.5 ft.
Wetted Width: 15 ft.
Water Velocity: 1.7 ft./sec.
(Measured with Float Test)
Dominant Substrate: Cobble
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.3 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 360 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.472
Erosion: 0.1236 tons/year
Right Approach
Length: 460 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.492
Erosion: 0.1646 tons/year
Erosion Information
Total Erosion at Crossing: 0.2882 tons/year
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Flow through crossing is too fast and shallow for fish passage
A future visit to this site is recommended. Consider future replacement of crossing