Road Stream Crossing Site EUP_MRW20
Munuscong River Watershed, Munuscong River
W 17 Mile Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.2595709,-84.5500652
T 045N R 002 Sec 34
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 5.01 tons/year
Overall Score: 18
Severity: Moderate
Date Inventoried: 8/5/2021
Road Approach - Left
Road Approach - Right
Upstream Conditions
Outlet
Downstream Conditions
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Moderate to major deterioration from corrosion or abrasion (less than 5% of the structure has small holes or is nearly rusted through) or cracking or spalling or chipping (several small cracks or moderate chipping in the concrete). OR Moderate shape changes (described above).
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 60 ft. Width 11 ft. Height 8 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.2 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 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec. (measured via Flow Meter)
Dominant Substrate: Clay – very fine particles that stick together
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: 18 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4.5 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 4.5 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: 2.83 tons/year
Right Approach
Length: 800 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 2.18 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 5.01 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, Wild parsnip, birds foot trefoil.
Site Comments: Most measuremnts not taken due to large amounts of wild parsnip. Return for inventory when there is minimal vegetative growth.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.