Road Stream Crossing Site UBR_LR03
Upper Black River Watershed, Little Rainy River
3 Mile Hwy
Presque Isle County
Information collected by:
Site Location
GPS Coordinates: 45.3107965,-84.1734129
T 034N R 002 Sec 27
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 39.5 tons/year
Overall Score: 4
Severity: Minor
Date Inventoried: 10/7/2021
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: Pipe Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Not new, but no noticeable corrosion, abrasion, chipping, spalling, or cracking. No shape changes such as barrel distortion (bowing, bending, warping), bulging, inlet or outlet damaged.
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 83 ft. Width 13 ft. Height 8.7 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 3.4 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 3.7 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured 3 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? No
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 15 ft.
Wetted Width: 11.7 ft.
Water Velocity: 0.2 ft./sec. (measured via Flow Meter)
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: 26.8 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 0.5 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 1.6 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 700 ft.
Slope: > 10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 37.93 tons/year
Right Approach
Length: 365 ft.
Slope: > 10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 1.57 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 39.5 tons/year
Summary Information
Fish Passability: Not a Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Spotted knapweed, mullein.
Site Comments: Heavy beaver activity
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.