Road Stream Crossing Site EUP_CHRW05
Charlotte River Watershed, Charlotte River
11 Mile Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.3466029,-84.358079
T 046N R 001 Sec 30
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 0.16 tons/year
Overall Score: 13
Severity: Minor
Date Inventoried: 6/9/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Site Sketch
Crossing Information*
Type of Crossing: Bridge
Number of Structures: 1
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30 to 70 degrees
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Not new, but no noticeable corrosion, abrasion, chipping, spalling, or cracking. No shape changes such as barrel distortion (bowing, bending, warping), bulging, inlet or outlet damaged.
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 30 ft. Width 31 ft. Height 11 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 2 ft.
Embedded Depth of Structure: 2 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Embedded Depth of Structure: 2 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 1.8 ft. below the surface (via Flow Meter).
Additional Comments
Surrounded by Amish farms
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? No
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 2 ft.
Bankfull Width: 22 ft.
Wetted Width: 20 ft.
Water Velocity: 0.1 ft./sec. (measured via Flow Meter)
Dominant Substrate: Sand – particles are smaller than a pinhead and feel gritty between fingers
Road Information
Road Surface: Paved
Owner: County
Road Condition: Old Pavement or Rutted, Minor cracking or rutting/ponding at crossing all or part of crossing length.
Road Core Integrity: Good (no symptoms of lack of integrity)
Road Width at Culvert: 30 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 0 ft.
Slope: Vertical, 0:1, or 90°
Downstream
Fill Depth: 0 ft.
Slope: Vertical, 0:1, or 90°
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: 350 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.16 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.16 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, Knapweed, reed canary grass.
Site Comments: Road gravel entering from right approach and going through the bridge decking.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.