Road Stream Crossing Site EUP_MRW33
Munuscong River Watershed, Parker Creek
Wynn Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1933145,-84.3423339
T 044N R 001 Sec 20
Fish Passability: Barrier
Structure is NOT Perched
Total Erosion: 2.9 tons/year
Overall Score: 41
Severity: Severe
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: 1
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
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.
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 30 ft. Width 8.8 ft. Height 11 ft.
Percentage Plugged: 61% - 80% Outlet
Percentage Crushed: 21% - 40%
Structure is NOT Perched
Structure Inlet
Water Depth: 3.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured 0.1 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? No
Is Upstream Ponding Present? Yes
Pond: Length 30 ft., Width 30 ft.
Riffle Information
Water Depth: 5 ft.
Bankfull Width: 10 ft.
Wetted Width: 10 ft.
Water Velocity: 0 ft./sec.
Dominant Substrate: Clay – very fine particles that stick together
Road Information
Road Surface: Gravel
Owner: County,Private
Road Condition: New Pavement or Well Graded, Same condition as initial placement.
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: 1.3 ft.
Slope: Gentle, 3:1, 15°, or 33%
Downstream
Fill Depth: 3 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 600 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 1.24 tons/year
Right Approach
Length: 750 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 1.66 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 2.9 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? Yes, remove beaver dam in culvert.
Were any non-native species observerd at this site? No
Site Comments: Old beaver dam. beaver dam recently removed causing scour and ponding. Rep reach not recorded due to flooding and inaccessibility
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.