Road Stream Crossing Site EUP_6336403321
Carp River Watershed, Schwesinger Creek
W molly Gibson rd
Chippewa County
Information collected by:
Superior Watershed Partnership
Site Location
GPS Coordinates: 46.183706322,-85.0788493649999
T 044NN R 006W Sec 29
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 0.2 tons/year
Date Inventoried: 6/15/2020
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: Severe deterioration from corrosion or abrasion (more than 50% of the structure is rusted through) or cracking or spalling or chipping (more than 50% of the structure is compromised). Or Major shape changes (described above) reducing the capacity of the structure by greater than 50%. OR Segment disconnect causing major subsurface erosion/piping and/or partial fill failure and/or sink holes in the fill.
Structure Interior: Corrugated
Is Structure Rusted through? Yes
Dimensions of Structure: Length 14 ft. Width 2 ft. Height 2 ft.
Percentage Plugged: None or 0%
Percentage Crushed: 81% - 100%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the surface.
Stream Information
Stream Flow: > Bankfull – Water has filled the stream channel and is flowing onto the floodplain.
Is Scour Pool Present? No
Is Upstream Ponding Present? Yes
Pond: Length 30 ft., Width 25 ft.
Riffle Information
Water Depth: 1.6 ft.
Bankfull Width: 3 ft.
Wetted Width: 2.6 ft.
Water Velocity: 0.33 ft./sec. (measured via Float Test)
Dominant Substrate: Gravel – rocks between the size of a pinhead and a baseball
Road Information
Road Surface: Gravel
Owner: Tribal
Road Condition: Old Pavement or Rutted, Minor cracking or rutting/ponding at crossing all or part of crossing length.
Road Width at Culvert: 12 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: Vertical, 0:1, or 90°
Downstream
Fill Depth: 2 ft.
Slope: Vertical, 0:1, or 90°
Approaches
Left Approach
Length: 0 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0 tons/year
Right Approach
Length: 0 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.2 tons/year
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Extent of Erosion | Estimated Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | ||
Road at Crossing | 2 ft. | 2.5 ft. | 2 ft. | Yes | Gravel | Severe (corrective actions recommended) | 0.2 |
Summary Information
Fish Passability: Not a Barrier
Is a future visit to this site recommended? Yes, Barrier to fish because it is crushed and erosion.
Were any non-native species observerd at this site? No
Site Comments: Barrier to fish
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.