Road Stream Crossing Site EUP_PRW03
Pine River Watershed
South River Road
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1725091,-84.5728086
T 044N R 002 Sec 32
Owned by Private
Fish Passability: Barrier
Perch Height: 1.6 ft.
Total Erosion: 0.38 tons/year
Overall Score: 32
Severity: Severe
Date Inventoried: 4/12/2021
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: Ellipse
Inlet Type: Projecting
Outlet Type: Freefall onto Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: Moderate deterioration from corrosion or abrasion (small rust flakes or indication that rust is slightly deeper than the surface level) or cracking or spalling or chipping (few minor cracks or localized chipping in the concrete). OR minor shape changes (described above).
Structure Interior: Smooth
Is Structure Rusted through? Yes
Dimensions of Structure: Length 27 ft. Width 8.5 ft. Height 6.5 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 1.6 ft.
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.7 ft./sec.
Structure Outlet
Water Depth: 1.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.6 ft./sec.
*Water Velocities were measured 0.9 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? Yes
Scour Pool: Length 25 ft., Width 14.5 ft., Depth 3 ft.
Is Upstream Ponding Present? Yes
Pond: Length 20 ft., Width 13 ft.
Riffle Information
Water Depth: 0.7 ft.
Bankfull Width: 11 ft.
Wetted Width: 9 ft.
Water Velocity: 0.1 ft./sec. (measured via Flow Meter)
Dominant Substrate: Silt – very fine particles that don't stick together
Road Information
Road Surface: Gravel
Owner: County
Road Condition: Old Pavement or Rutted, Minor cracking or rutting/ponding at crossing all or part of crossing length.
Road Core Integrity: Poor (one or more symptoms are present and are compromising the integrity of the crossing)
Road Width at Culvert: 12 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4.5 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 5 ft.
Slope: Gentle, 3:1, 15°, or 33%
Approaches
Left Approach
Length: 134 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.17 tons/year
Right Approach
Length: 155 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.21 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.38 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, Honeysuckle, thistle.
Site Comments: Perched culvert
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.