Road Stream Crossing Site EUP_PRW35
Pine River Watershed, Little Bear Creek
FR3511
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1720676,-84.7382393
T 044N R 004 Sec 36
Fish Passability: Potential Behavioral Barrier
Structure is NOT Perched
Total Erosion: 0.73 tons/year
Overall Score: 14
Severity: Minor
Date Inventoried: 8/26/2021
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: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30 to 70 degrees
Outlet Type: At Stream Grade
Structure Material: Concrete
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 37 ft. Width 7 ft. Height 5 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.5 ft.
Embedded Depth of Structure: 2 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 2.2 ft.
Embedded Depth of Structure: 2 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 2 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: 1.6 ft.
Bankfull Width: 10 ft.
Wetted Width: 7.6 ft.
Water Velocity: 0.1 ft./sec. (measured via Flow Meter)
Dominant Substrate: Sand – particles are smaller than a pinhead and feel gritty between fingers
Road Information
Road Surface: Gravel
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: 12 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 0.8 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 1 ft.
Slope: Gentle, 3:1, 15°, or 33%
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: 0.2 tons/year
Right Approach
Length: 250 ft.
Slope: 1-5%
Erosion Estimate: 0.53 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.73 tons/year
Summary Information
Fish Passability: Potential Behavioral Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Wild carrot, spotted knapweed, wild parsnip.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.