Road Stream Crossing Site CLHW_LBR-009
Little Black River Watershed, South Branch Little Black River
Schmidt Rd
Inverness Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.62262
, -84.53915
T37N
R2W
Sec 3
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 7.2231 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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 41 ft.
, Width 4.9 ft.
, Height 3.3 ft.
Percentage Plugged:
Inlet: 26% to 50%
Outlet: 0%
In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
Structure Outlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Additional Comments
Flooding upstream at this time of year
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.9 ft.
Bankfull Width: 9 ft.
Wetted Width: 7 ft.
Water Velocity: 1.1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 23 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.3 ft.
Slope: 1:2
Downstream
Fill Depth: 1.4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.6116 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.6116 tons/year
Erosion Information
Total Erosion at Crossing: 7.2231 tons/year
Summary Information
Fish Passability 0.5
Fish Passage is an area of concern for this site.
Culvert disrupts natural flow and causes upstream flooding in springtime
A future visit to this site is recommended. Revisit to determine if culvert is in need of replacement
These non-native species were observerd at this site: Reed Canary Grass