Road Stream Crossing Site EUP_6336936286
Carp River Watershed, Red Creek
Red Creek Rd (FR 3118)
Mackinac County
Information collected by:
Site Location
GPS Coordinates: 46.0166086400001,-84.746685186
T 042NN R 004W Sec 24
Fish Passability: Barrier
Perch Height: 0.2 ft.
Total Erosion: 0.76 tons/year
Overall Score: 29
Severity: Severe
Date Inventoried: 4/2/2021
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch
Inlet Type: Projecting
Outlet Type: Cascade Over Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: Moderate deterioration from corrosion or abrasion (small rust flakes or indication that rust is slightly deeper than the surface level) or cracking or spalling or chipping (few minor cracks or localized chipping in the concrete). OR minor shape changes (described above).
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 46.2 ft. Width 9.3 ft. Height 7 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 0.2 ft.
Structure Inlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 6.5 ft./sec.
*Water Velocities were measured 0.4 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? Yes
Scour Pool: Length 52.5 ft., Width 21 ft., Depth 2.2 ft.
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 1.7 ft.
Bankfull Width: 18.5 ft.
Wetted Width: 15 ft.
Water Velocity: 1.7 ft./sec. (measured via Flow Meter)
Dominant Substrate: Gravel – rocks between the size of a pinhead and a baseball
Road Information
Road Surface: Gravel
Owner: Federal
Road Condition: New Pavement or Well Graded, Same condition as initial placement.
Road Core Integrity: Fair (some of the symptoms may be present, but not to an extent posing high risk to the crossing)
Road Width at Culvert: 11.6 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4.3 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 3.9 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 230 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.32 tons/year
Right Approach
Length: 300 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.44 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.76 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? Yes, Fish passage barrier.
Were any non-native species observerd at this site? No
Site Comments: Culvert is large but placed too high above stream. Has the function of small culvert
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.