Road Stream Crossing Site CLHW_LBR-019
Little Black River Watershed, South Branch of Little Black River
Levering St/State St
Beaugrand Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.64868
, -84.49809
T38N
R2W
Sec 25
Owned by Private
Fish Passability 0
Perch Height: 2 ft.
Total Erosion: 0.6347 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: Other
Outlet Type: Freefall into Pool
Structure Material: Concrete
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 89 ft.
, Width 11 ft.
, Height 7.7 ft.
Perch Height: 2 ft.
Structure Inlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.4 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.4 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Additional Comments
Inlet has large dropoff as it enters culvert; complete obstruction of fish passage
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 52 ft.
, Width 25 ft.
, Depth 3.3 ft.
Riffle Information
Water Depth: 2.8 ft.
Bankfull Width: 13 ft.
Wetted Width: 9 ft.
Water Velocity: 1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 24 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: More than 1:2
Downstream
Fill Depth: 5.8 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.8
Erosion: 0.6347 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.6347 tons/year
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Fish are unable to pass this crossing at inlet; large dropoff at inlet
A future visit to this site is recommended. May want to determine if crossing needs replacement to allow fish passage throughout the rest of south branch of Little Black River