Road Stream Crossing Site EUP_MRW08
Munuscong River Watershed, Unnamed
S Prentiss Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.0597863,-84.2174668
T 042N R 002 Sec 05
Fish Passability: Barrier
Perch Height: 0.6 ft.
Total Erosion: 0.08 tons/year
Overall Score: 33
Severity: Severe
Date Inventoried: 8/4/2021
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: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Plastic
Structure Substrate: None
General Conditions: Not new, but no noticeable corrosion, abrasion, chipping, spalling, or cracking. No shape changes such as barrel distortion (bowing, bending, warping), bulging, inlet or outlet damaged.
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 52 ft. Width 2 ft. Height 2 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 0.6 ft.
Structure Inlet
Water Depth: 0.4 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.6 ft./sec.
*Water Velocities were measured at 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 3 ft., Width 6 ft., Depth 0.8 ft.
Is Upstream Ponding Present? Yes
Pond: Length 3 ft., Width 3 ft.
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 5 ft.
Wetted Width: 4 ft.
Water Velocity: 0.3 ft./sec. (measured via Flow Meter)
Dominant Substrate: Sand – particles are smaller than a pinhead and feel gritty between fingers
Road Information
Road Surface: Paved
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: 22 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 2.2 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 1000 ft.
Slope: < 1%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.04 tons/year
Right Approach
Length: 1000 ft.
Slope: < 1%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.04 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.08 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Spotted knapweed.
Site Comments: Poor alignment
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.