Road Stream Crossing Site EUP_DI14
Drummond Island Watershed, Pigeon Cove Creek
Hwy 134
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 45.9829638,-83.807387
T 041N R 005 Sec 04
Fish Passability: Barrier at High Flows
Structure is NOT Perched
Total Erosion: 1.18 tons/year
Overall Score: 18
Severity: Moderate
Date Inventoried: 6/3/2021
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: Apron
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
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 70 ft. Width 4 ft. Height 4 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.6 ft./sec.
Structure Outlet
Water Depth: 4.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured 3.9 ft. below the surface (via Flow Meter).
Stream Information
Stream Flow: < Bankfull – The stream channel is more than half filled with water, but is not full.
Stream Flow Type: Perennial (if flowing during the time of assessment.)
Is Scour Pool Present? No
Is Upstream Ponding Present? Yes
Pond: Length 150 ft., Width 60 ft.
Riffle Information
Water Depth: 2.4 ft.
Bankfull Width: 11 ft.
Wetted Width: 74 ft.
Water Velocity: 0.5 ft./sec. (measured via Flow Meter)
Dominant Substrate: Sand – particles are smaller than a pinhead and feel gritty between fingers
Road Information
Road Surface: Paved
Owner: State
Road Condition: Old Pavement or Rutted, Minor cracking or rutting/ponding at crossing all or part of crossing length.
Road Core Integrity: Good (no symptoms of lack of integrity)
Road Width at Culvert: 44 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.3 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 4.3 ft.
Slope: Gentle, 3:1, 15°, or 33%
Approaches
Left Approach
Length: 730 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.77 tons/year
Right Approach
Length: 450 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.41 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 1.18 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
Site Comments: Undersized culvert. Outlet flows directly into lake Huron
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.