Road Stream Crossing Site EUP_MRW27
Munuscong River Watershed, Unnamed
S Steinbeck Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1713017,-84.5091047
T 044N R 002 Sec 35
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 5.66 tons/year
Overall Score: 28
Severity: Moderate
Date Inventoried: 8/6/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Downstream Conditions
Representative Reach
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Ellipse
Inlet Type: Projecting
Structure Material: Metal
Structure Substrate: None
General Conditions: Major deterioration from corrosion or abrasion (5-10% of the structure is rusted through) or cracking or spalling or chipping (medium sized cracks, widespread chipping, exposed metal reinforcement). OR Major shape changes (described above) reducing the capacity of the structure by less than 30%. OR segment disconnection (segments of concrete or metal culvert disconnecting internally) but no evidence of water piping.
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 60 ft. Width 8 ft. Height 7 ft.
Percentage Plugged: None or 0%
Percentage Crushed: 21% - 40%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.8 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? Yes
Scour Pool: Length 30 ft., Width 15 ft., Depth 2 ft.
Is Upstream Ponding Present? Yes
Pond: Length 40 ft., Width 25 ft.
Riffle Information
Water Depth: 1.2 ft.
Bankfull Width: 17 ft.
Wetted Width: 12.5 ft.
Water Velocity: 0 ft./sec. (measured via Flow Meter)
Dominant Substrate: Silt – very fine particles that don't 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: 15 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5.5 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 6 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 200 ft.
Slope: 6-10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 1.2 tons/year
Right Approach
Length: 400 ft.
Slope: 6-10%
Vegetation: None, Ditch has been recently graded and is bare of vegetation.
Erosion Estimate: 4.46 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 5.66 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.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.