Road Stream Crossing Site EUP_6336922161
Carp River Watershed, Flat Creek
East Lake Road (FR 3119)
Mackinac County
Information collected by:
Superior Watershed Partnership
Site Location
GPS Coordinates: 46.0411214210001,-84.802226694
T 042NN R 004W Sec 16
Owned by Federal
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 0.22 tons/year
Overall Score: 6
Severity: Minor
Date Inventoried: 4/6/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30 to 70 degrees
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: No deficiencies. New structure or nearly new condition.
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 34.8 ft. Width 16.1 ft. Height 9 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 4.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 4.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 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 filled the stream channel and is flowing onto the floodplain.
Stream Flow Type: Perennial (if flowing during the time of assessment.)
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.
Road Information
Road Surface: Gravel
Owner: Federal
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: 28.937 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.6 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 3.8 ft.
Slope: Gentle, 3:1, 15°, or 33%
Approaches
Left Approach
Length: 0 ft.
Slope: < 1%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0 tons/year
Right Approach
Length: 500 ft.
Slope: < 1%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.22 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.22 tons/year
Summary Information
Fish Passability: Not a Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Spotted Knapweed.
Site Comments: Very swampy, beaver dam upstream and downstream
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.