Road Stream Crossing Site EUP_BMIC_RSX60
Waishkey River Watershed
Chippewa County
Information collected by:
Bay Mills Indian Community
Site Location
GPS Coordinates: 46.3610272920001,-84.447331637
T 046N R 001 Sec 20
Fish Passability: Barrier at High Flows
Structure is NOT Perched
Total Erosion: 1.77 tons/year
Overall Score: 25
Severity: Moderate
Date Inventoried: 11/27/2020
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Moderate to major deterioration from corrosion or abrasion (less than 5% of the structure has small holes or is nearly rusted through) or cracking or spalling or chipping (several small cracks or moderate chipping in the concrete). OR Moderate shape changes (described above).
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 44 ft. Width 7 ft. Height 7 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.83 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 1.33 ft.
Embedded Depth of Structure: 0.42 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured at the surface (via Float Test).
Additional Comments
Updated by Huron Pines
Stream Information
Stream Flow: = Bankfull – Water has completely filled the stream channel, but is not flowing onto the floodplain.
Stream Flow Type: Perennial (if flowing during the time of assessment.)
Is Scour Pool Present? Yes
Scour Pool: Length 31 ft., Width 16 ft., Depth 1.75 ft.
Is Upstream Ponding Present? Yes
Pond: Length 20 ft., Width 15 ft.
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 8 ft.
Wetted Width: 6 ft.
Water Velocity: 0 ft./sec. (measured via Flow Meter)
Dominant Substrate: Clay – very fine particles that stick together
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: 15 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 4.5 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 250 ft.
Slope: 6-10%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 1.36 tons/year
Right Approach
Length: 100 ft.
Slope: 6-10%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.41 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 1.77 tons/year
Summary Information
Fish Passability: Barrier at High Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Wild parsnip.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.