Road Stream Crossing Site CLHW_LBR-021
Little Black River Watershed, Unnamed Branch of Little Black River
W Court St
Beaugrand Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.64442
, -84.49836
T38N
R2W
Sec 36
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 0.0308 tons/year
Severity: Minor
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: Round
Inlet Type: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 54 ft.
, Width 7.2 ft.
, Height 7.2 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
Structure Outlet
Water Depth: 1.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 82 ft.
, Width 13.5 ft.
, Depth 2 ft.
Riffle Information
Water Depth: 2.1 ft.
Bankfull Width: 21 ft.
Wetted Width: 12 ft.
Water Velocity: 0.7 ft./sec.
(Measured with Float Test)
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 23.5 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 104 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.382
Erosion: 0.0308 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.0308 tons/year
Summary Information
Fish Passability 0.9