Road Stream Crossing Site AUS_OS040
Au Sable River Watershed, Tributary of West Branch Big Creek
County Rd 489
Big Creek Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.62682
, -84.27119
T26N
R01E
Sec 23,24
Owned by Private
Fish Passability 0.5
Total Erosion: 3.2046 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)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 77 ft.
, Width 1.5 ft.
, Height 1.5 ft.
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.26 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.99 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 5 ft.
Wetted Width: 2 ft.
Water Velocity: 0.72 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 37 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 2.5074 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6972 tons/year
Erosion Information
Total Erosion at Crossing: 3.2046 tons/year
Summary Information
Fish Passability 0.5
These non-native species were observerd at this site: Queen Anne's Lace, Spotted Knapweed