Road Stream Crossing Site EUP_PRW35
Pine River Watershed
S. Peffers Road
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1743138,-84.6135825
T 044N R 003 Sec 25
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 2.52 tons/year
Overall Score: 34
Severity: Severe
Date Inventoried: 5/27/2021
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: 2
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Severe deterioration from corrosion or abrasion (more than 50% of the structure is rusted through) or cracking or spalling or chipping (more than 50% of the structure is compromised). Or Major shape changes (described above) reducing the capacity of the structure by greater than 50%. OR Segment disconnect causing major subsurface erosion/piping and/or partial fill failure and/or sink holes in the fill.
Additional (Multiple) Structures | ||||
Structure | Width | Length | Height | Material |
1 | 3 ft. | 24.7 ft. | 3 ft. | Metal |
2 | 3 ft. | 21 ft. | 3 ft. | Metal |
Structure Interior: Smooth
Is Structure Rusted through? Yes
Dimensions of Structure: Length 24.7 ft. Width 3 ft. Height 3 ft.
Percentage Plugged: 41% - 60% Inlet
Percentage Crushed: 41% - 60%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the surface (via Float Test).
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? Yes
Pond: Length 25 ft., Width 20 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 3 ft.
Wetted Width: 1.5 ft.
Water Velocity: 0.1 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: State
Road Condition: Old Pavement or Rutted, Minor cracking or rutting/ponding at crossing all or part of crossing length.
Road Core Integrity: Fair (some of the symptoms may be present, but not to an extent posing high risk to the crossing)
Road Width at Culvert: 11 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.9 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 2 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 1000 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 1.73 tons/year
Right Approach
Length: 520 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.79 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 2.52 tons/year
Summary Information
Fish Passability: Barrier at Most Flows
Is a future visit to this site recommended? Yes, Culverts need to be replaced.
Were any non-native species observerd at this site? Yes, Thistle, water forget-me-not.
Site Comments: Plugged culvert
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.