Road Stream Crossing Site EUP_SI15
Saint Marys River Watershed, Unnamed
E North Shore Drive
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.5276852,-84.1507447
T 048N R 002 Sec 26
Fish Passability: Barrier
Perch Height: 2 ft.
Total Erosion: 0.08 tons/year
Overall Score: 20
Severity: Severe
Date Inventoried: 7/1/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Plastic
Structure Substrate: None
General Conditions: No deficiencies. New structure or nearly new condition.
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 40 ft. Width 2 ft. Height 2 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 2 ft.
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured at 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: Ephemeral (if channel is dry and appears to flow only after heavy rains, may be covered in organic debris indicating it has not flowed recently).
Is Scour Pool Present? Yes
Scour Pool: Length 15 ft., Width 10 ft., Depth 1 ft.
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec. (measured via Flow Meter)
Dominant Substrate: Cobble – baseball-sized or larger rocks (10in)
Road Information
Road Surface: Paved
Owner: County
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: 20 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 3 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 150 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.04 tons/year
Right Approach
Length: 140 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.04 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.08 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Burdock.
Site Comments: Representative reach due to innaccessibility. Stream similar to others in area, cobble bed and steep.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.