Road Stream Crossing Site PIGN_DC04
Pigeon River Watershed, Duck Creek
Wilkinson Rd
Otsego County
Information collected by:
Site Location
GPS Coordinates: 45.0276331,-84.513703
T 031N R 002 Sec 35
Fish Passability: Barrier
Perch Height: 1.3 ft.
Total Erosion: 3.08 tons/year
Overall Score: 25
Severity: Severe
Date Inventoried: 9/9/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 119 ft. Width 3.5 ft. Height 3.5 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 1.3 ft.
Structure Inlet
Water Depth: 1.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.7 ft./sec.
Structure Outlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 7.1 ft./sec.
*Water Velocities were measured 0.5 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 23 ft., Width 17 ft., Depth 3.5 ft.
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 18.6 ft.
Wetted Width: 13 ft.
Water Velocity: 1.8 ft./sec. (measured via Flow Meter)
Dominant Substrate: Gravel – rocks between the size of a pinhead and a baseball
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: 23 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 8 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 8 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 600 ft.
Slope: > 10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 3.08 tons/year
Right Approach
Length: 0 ft.
Slope: > 10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 3.08 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Spotted knapweed, leafy spurge.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.