Road Stream Crossing Site EUP_633657794
Carp River Watershed, Unnamed
N ozark rd
Mackinac County
Information collected by:
Superior Watershed Partnership
Site Location
GPS Coordinates: 46.1296709160001,-84.988145437
T 043NN R 006W Sec 12
Fish Passability: Barrier
Structure is NOT Perched
Total Erosion: 0.03 tons/year
Date Inventoried: 6/9/2020
Crossing Information*
Type of Crossing: Ford
Number of Structures: 1
Structure Shape: Other
Inlet Type: Other
Outlet Type: Other
Structure Material: Other
Structure Substrate: Sand
General Conditions: Major deterioration from corrosion or abrasion (5-10% of the structure is rusted through) or cracking or spalling or chipping (medium sized cracks, widespread chipping, exposed metal reinforcement). OR Major shape changes (described above) reducing the capacity of the structure by less than 30%. OR segment disconnection (segments of concrete or metal culvert disconnecting internally) but no evidence of water piping.
Is Structure Rusted through? No
Dimensions of Structure: Length 27 ft. Width 0 ft. Height 0 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 17 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 (via Float Test).
Stream Information
Stream Flow: < Bankfull – The stream channel is more than half filled with water, but is not full.
Is Scour Pool Present? No
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
Dominant Substrate: Sand – particles are smaller than a pinhead and feel gritty between fingers
Road Information
Road Surface: Sand
Owner: Township
Road Width at Culvert: 7 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 0 ft.
Downstream
Fill Depth: 0 ft.
Approaches
Left Approach
Length: 30 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.02 tons/year
Right Approach
Length: 20 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.01 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.03 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? Yes, Erosion and trail maintenance.
Were any non-native species observerd at this site? No
Site Comments: May have been a bridge at once but now deep ford. Coordinates on this survey incorrect, use arc collector
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.