Road Stream Crossing Site EUP_MCW32
Les Cheneaux Islands Watershed
Hwy 134
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 45.9676612,-83.9857872
T 041N R 004 Sec 07
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 0.09 tons/year
Overall Score: 11
Severity: Minor
Date Inventoried: 5/27/2021
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: Wingwall 30 to 70 degrees
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 60 ft. Width 5 ft. Height 5 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.5 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? No
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 7 ft.
Wetted Width: 5.5 ft.
Water Velocity: 0.4 ft./sec. (measured via Flow Meter)
Dominant Substrate: Cobble – baseball-sized or larger rocks (10in)
Road Information
Road Surface: Paved
Owner: State
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: 37 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.5 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 3 ft.
Approaches
Left Approach
Length: 550 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.03 tons/year
Right Approach
Length: 1000 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.06 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.09 tons/year
Summary Information
Fish Passability: Not a Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Knapweed.
Site Comments: Man made dam 100' upstream, fish barrier.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.