Road Stream Crossing Site EUP_MRW28
Munuscong River Watershed, Unnamed
S Jarvie Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1751247,-84.5299812
T 044N R 002 Sec 27
Fish Passability: Barrier at High Flows
Structure is NOT Perched
Total Erosion: 3.18 tons/year
Overall Score: 23
Severity: Moderate
Date Inventoried: 8/6/2021
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: None
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Additional (Multiple) Structures | ||||
Structure | Width | Length | Height | Material |
2 | 6.5 ft. | 70 ft. | 6.5 ft. | Metal |
2 | 4.2 ft. | 60 ft. | 4.2 ft. | Plastic |
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 70 ft. Width 6.5 ft. Height 6.5 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: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at 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? Yes
Scour Pool: Length 20 ft., Width 18 ft., Depth 3 ft.
Is Upstream Ponding Present? Yes
Pond: Length 20 ft., Width 40 ft.
Riffle Information
Water Depth: 3 ft.
Bankfull Width: 20 ft.
Wetted Width: 16 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: New Pavement or Well Graded, Same condition as initial placement.
Road Core Integrity: Good (no symptoms of lack of integrity)
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 5.5 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 5.5 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 250 ft.
Slope: 6-10%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 1.82 tons/year
Right Approach
Length: 200 ft.
Slope: 6-10%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 1.36 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 3.18 tons/year
Summary Information
Fish Passability: Barrier at High Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Wild parsnip, burdock, birds-foot trefoil, quen anne's lace, thistle.
Site Comments: Undersized/Poor alignment
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.