Road Stream Crossing Site EUP_Dafter 1
Waishkey River Watershed
UnNamed Rd
Chippewa County
Information collected by:
MiDNR
Site Location
GPS Coordinates: 46.3266872,-84.4854035
T 045N R 001 Sec 06
Fish Passability: Barrier at High Flows
Structure is NOT Perched
Total Erosion: 0 tons/year
Overall Score: 33
Severity: Severe
Date Inventoried: 10/7/2021
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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Severe deterioration from corrosion or abrasion (more than 50% of the structure is rusted through) or cracking or spalling or chipping (more than 50% of the structure is compromised). Or Major shape changes (described above) reducing the capacity of the structure by greater than 50%. OR Segment disconnect causing major subsurface erosion/piping and/or partial fill failure and/or sink holes in the fill.
Structure Interior: Corrugated
Is Structure Rusted through? Yes
Dimensions of Structure: Length 20 ft. Width 1 ft. Height 1 ft.
Percentage Plugged: 21% - 40% Inlet
Percentage Crushed: 61% - 80%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured at the surface (via Float Test).
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? Yes
Scour Pool: Length 6 ft., Width 5 ft., Depth 1 ft.
Is Upstream Ponding Present? Yes
Pond: Length 10 ft., Width 8 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 11 ft.
Wetted Width: 11 ft.
Water Velocity: 0.2 ft./sec. (measured via Float Test)
Dominant Substrate: Silt – very fine particles that don't stick together
Road Information
Road Surface: Grass/Vegetated
Owner: State
Manager: DNR Forest Resources Division
Road Condition: Broken Pavement or Rilled/Gullied, Multiple patches, cracks, rilling, or gullies at crossing.
Road Core Integrity: Fair (some of the symptoms may be present, but not to an extent posing high risk to the crossing)
Road Width at Culvert: 10 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 2 ft.
Slope: Gentle, 3:1, 15°, or 33%
Approaches
Left Approach
Length: 75 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0 tons/year
Right Approach
Length: 0 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0 tons/year
Summary Information
Fish Passability: Barrier at High Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? No
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.