Road Stream Crossing Site PIGN_PR41

Pigeon River Watershed, Unnamed
Whitehouse Trail
Otsego County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 45.0396752,-84.5722029
T 031N R 002 Sec 32
Fish Passability: Barrier
Perch Height: 0.5 ft.
Total Erosion: 0.29 tons/year
Overall Score: 45
Severity: Severe
Date Inventoried: 10/8/2021
Road Approach - Left
Road Approach - Left
Road Approach - Right
Road Approach - Right
Upstream Conditions
Upstream Conditions
Downstream Conditions
Downstream Conditions
Representative Reach
Representative Reach
Site Sketch
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 2
Structure Shape: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Additional (Multiple) Structures
3 ft.
42 ft.
2.3 ft.
2 ft.
27.5 ft.
2 ft.
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 42 ft. Width 3 ft. Height 2.3 ft.
Percentage Plugged: None or 0%
Percentage Crushed: 1% - 20%
Perch Height: 0.5 ft.
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 1.9 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4 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 15 ft., Width 13 ft., Depth 2 ft.
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 56 ft.
Wetted Width: 5 ft.
Water Velocity: 0.8 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: 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: 17.5 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 0.5 ft.
Slope: Gentle, 3:1, 15, or 33%
Fill Depth: 1 ft.
Slope: Gentle, 3:1, 15, or 33%
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: 1000 ft.
Slope: < 1%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.29 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.29 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? Yes, Replacement.
Were any non-native species observerd at this site? No
Site Comments: Road washing into stream
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.