Road Stream Crossing Site AUS_OS058
Au Sable River Watershed, East Branch Big Creek
Park Rd (County 489)
Big Creek Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.6159
, -84.2668
T26N
R01E
Sec 25
Owned by Private
Fish Passability 0.9
Total Erosion: 1.1208 tons/year
Severity: Moderate
Year Inventoried: 2013
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Good
Dimensions of Structure: Length 41 ft.
, Width 35 ft.
, Height 13.5 ft.
Structure Inlet
Water Depth: 2.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.43 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.34 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.4 ft.
Bankfull Width: 60 ft.
Wetted Width: 30 ft.
Water Velocity: 1.62 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 25.3 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Slope: Vertical
Slope: Vertical
Approaches
Left Approach
Length: 575 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.515
Erosion: 0.2477 tons/year
Right Approach
Length: 600 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.74
Erosion: 0.8732 tons/year
Erosion Information
Total Erosion at Crossing: 1.1208 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Catails, Queen Anne's Lace