Road Stream Crossing Site EUP_CHRW60
Charlotte River Watershed, Unknown
W 6 Mile Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.4192967,-84.3914891
T 046N R 001 Sec 02
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 6.37 tons/year
Overall Score: 19
Severity: Moderate
Date Inventoried: 8/3/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 76 ft. Width 11.5 ft. Height 8 ft.
Percentage Plugged: 1% - 20% Inside
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.6 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured 0.1 ft. below the surface (via Flow Meter).
Stream Information
Stream Flow: < 1/2 Bankfull – The stream channel is less than half filled with water.
Stream Flow Type: Perennial (if flowing during the time of assessment.)
Is Scour Pool Present? No
Is Upstream Ponding Present? Yes
Pond: Length 25 ft., Width 10 ft.
Riffle Information
Water Depth: 1.3 ft.
Bankfull Width: 7 ft.
Wetted Width: 6.5 ft.
Water Velocity: 0.1 ft./sec. (measured via Flow Meter)
Dominant Substrate: Organics – decomposing plant material
Road Information
Road Surface: Paved
Owner: County
Road Condition: New Pavement or Well Graded, Same condition as initial placement.
Road Core Integrity: Good (no symptoms of lack of integrity)
Road Width at Culvert: 31 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 6 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 6.6 ft.
Slope: Gentle, 3:1, 15°, or 33%
Approaches
Left Approach
Length: 1000 ft.
Slope: 1-5%
Vegetation: None, Ditch has been recently graded and is bare of vegetation.
Erosion Estimate: 1.26 tons/year
Right Approach
Length: 900 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 5.11 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 6.37 tons/year
Summary Information
Fish Passability: Barrier at Most Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Wild parsnip, queen annes lace, glossy buckthorn, reed canarygrass, white sweet clover, birds foot trefoil.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.