Road Stream Crossing Site EUP_BMIC_RSC98
Waishkey River Watershed, Unnamed
Chippewa County
Information collected by:
Bay Mills Indian Community
Site Location
GPS Coordinates: 46.407064399,-84.5722908339999
T 046NN R 002W Sec 05
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 4.38 tons/year
Overall Score: 27
Severity: Moderate
Date Inventoried: 12/1/2020
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Square/Rectangle
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
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 130 ft. Width 6 ft. Height 5 ft.
Percentage Plugged: 61% - 80% Inside,Outlet
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.042 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 0.17 ft.
Embedded Depth of Structure: 0.67 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the surface (via Float Test).
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? Yes
Scour Pool: Length 10 ft., Width 4 ft., Depth 0.41 ft.
Is Upstream Ponding Present? Yes
Pond: Length 6 ft., Width 5 ft.
Riffle Information
Road Information
Road Surface: Gravel
Owner: State
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: 41 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 25 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 30 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 300 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 1.56 tons/year
Right Approach
Length: 500 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 2.82 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 4.38 tons/year
Summary Information
Fish Passability: Barrier at Most Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, thistle.
Site Comments: Other culvert dumping into upstream area
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.