Road Stream Crossing Site UBR_MC09
Upper Black River Watershed, Milligan Creek
Brady Rd
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.3848214,-84.3510174
T 035N R 001 Sec 30
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 0.13 tons/year
Overall Score: 15
Severity: Moderate
Date Inventoried: 10/7/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Other
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Native Bottom Arch
Inlet Type: Headwall and Wingwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: No deficiencies. New structure or nearly new condition.
Structure Interior: Corrugated
Dimensions of Structure: Length 60 ft. Width 32 ft. Height 10.4 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
Structure Outlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.6 ft./sec.
*Water Velocities were measured 1 ft. below the surface (via Flow Meter).
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? No
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 30 ft.
Wetted Width: 26.4 ft.
Water Velocity: 1.6 ft./sec. (measured via Flow Meter)
Dominant Substrate: Cobble – baseball-sized or larger rocks (10in)
Road Information
Road Surface: Paved
Owner: County
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: 22 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.6 ft.
Slope: Vertical, 0:1, or 90°
Downstream
Fill Depth: 1.6 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: 386 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.13 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.13 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, Mullein, spotted knapweed, reed canary grass.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.