Road Stream Crossing Site PIGN_PR29
Pigeon River Watershed, Pigeon River
Mullet Lake Road
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.4415725,-84.5582955
T 035N R 002 Sec 09
Fish Passability: Not a Barrier
Structure is NOT Perched
Total Erosion: 0 tons/year
Overall Score: 1
Severity: Minor
Date Inventoried: 9/7/2021
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: Native Bottom Arch
Inlet Type: Wingwall 10 to 30 degrees
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
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 41 ft. Width 57 ft. Height 19 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 10.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 10.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
*Water Velocities were measured 2.3 ft. below the surface (via Flow Meter).
Additional Comments
Gas lines also prrsent at site
Stream Information
Stream Flow: = Bankfull – Water has completely filled the stream channel, but is not flowing onto the floodplain.
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: 0 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec. (measured via Float Test)
Dominant Substrate: Organics – decomposing plant material
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: 38 ft.
Location of Low Point: Other
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: 0 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0 tons/year
Right Approach
Length: 0 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0 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, Purple loosestrife, leafy spurge, spotted knapweed, white sweet clover, round goby.
Site Comments: Representitive reach not recorded. Downstream is mullet lake. Up stream is a marsh.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.