Road Stream Crossing Site AUS_OS008
Au Sable River Watershed, Wright Creek
Farrington Rd
Greenwood Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.78317
, -84.25684
T28N
R01E
Sec 36
Owned by State
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 24.7313 tons/year
Severity: Severe
Year Inventoried: 2013
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Structure Shape: Round
Inlet Type: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 24 ft.
, Width 2.5 ft.
, Height 2 ft.
Percentage Plugged:
Inlet: 51% to 75%
Outlet: 51% to 75%
In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.1 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 1.212 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 1 ft.
Water Velocity*: 1.22 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 21 ft.
, Width 11 ft.
, Depth 1.7 ft.
Upstream Pond: Length 30 ft.
, Width 37 ft.
Riffle Information
Water Depth: 1.8 ft.
Bankfull Width: 10 ft.
Wetted Width: 5.5 ft.
Water Velocity: 0.625 ft./sec.
(Measured with Float Test)
Dominant Substrate: Silt
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 16 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: 1:1.5
Downstream
Fill Depth: 1 ft.
Slope: 1:2
Approaches
Left Approach
Length: 750 ft.
Slope: More Than 10%
Vegetation: Heavy
LS Factor: 5.135
Erosion: 16.9752 tons/year
Right Approach
Length: 430 ft.
Slope: More Than 10%
Vegetation: Heavy
LS Factor: 4.092
Erosion: 7.7561 tons/year
Erosion Information
Total Erosion at Crossing: 24.7313 tons/year
Extent of Erosion: Minor
Notes: Due to roadway traffic.
Summary Information
Fish Passability 0.9
Fish Passage is an area of concern for this site.
Extremely plugged trash rack will not allow fish passage.
A future visit to this site is recommended. To unplug culvert/assess their condition
These non-native species were observerd at this site: Spotted Knapweed, Bladder Campion, White Sweet Clover