Road Stream Crossing Site EUP_PRW06
Pine River Watershed
Trout Lake Road
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.2304299993087,-84.6284487345075
T 044N R 003 Sec 01
Fish Passability: Barrier
Perch Height: 2 ft.
Total Erosion: 0.24 tons/year
Overall Score: 33
Severity: Severe
Date Inventoried: 4/13/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Other
Other
Other
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Freefall into Pool
Structure Material: Concrete
Structure Substrate: Mixture
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 110 ft. Width 3 ft. Height 3 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 2 ft.
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.5 ft./sec.
*Water Velocities were measured 0.1 ft. below the surface (via Flow Meter).
Additional Comments
Stream crosses under road multiple times
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 6 ft., Width 5 ft., Depth 0.4 ft.
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 5 ft.
Wetted Width: 3 ft.
Water Velocity: 0.7 ft./sec. (measured via Flow Meter)
Dominant Substrate: Clay – very fine particles that stick together
Road Information
Road Surface: Paved
Owner: County
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: 27 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 20 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 25 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 510 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.23 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: 0.01 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.24 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, Spotted knapweed.
Site Comments: Stream crosses road 3 times. Inventoried crossing furthest downstream. Downstream culvert is representative of other two crossings flow.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.