Road Stream Crossing Site EUP_MRW36
Munuscong River Watershed, East Branch Munuscong River
E 23 Mile Rd
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.1724452,-84.3442521
T 044N R 001 Sec 30
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 5.62 tons/year
Overall Score: 7
Severity: Minor
Date Inventoried: 8/24/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Site Sketch
Crossing Information*
Type of Crossing: Bridge
Number of Structures: 1
Structure Shape: Other
Inlet Type: Other
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Structure Interior: Other
Is Structure Rusted through? No
Dimensions of Structure: Length 20 ft. Width 60 ft. Height 11 ft.
Percentage Plugged: 1% - 20% Inside
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.8 ft./sec.
*Water Velocities were measured 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? No
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 30 ft.
Wetted Width: 25 ft.
Water Velocity: 0.5 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: 16 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 0 ft.
Slope: Vertical, 0:1, or 90°
Downstream
Fill Depth: 0 ft.
Slope: Vertical, 0:1, or 90°
Approaches
Left Approach
Length: 375 ft.
Slope: 6-10%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 2.48 tons/year
Right Approach
Length: 450 ft.
Slope: 6-10%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 3.14 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 5.62 tons/year
Summary Information
Fish Passability: Not a Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Wild parsnip, wild carrot.
Site Comments: Bridge is surface is grated
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.