Road Stream Crossing Site AUS_OS038
Au Sable River Watershed, West Branch Big Creek
M-72
Big Creek Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.61601
, -84.29266
T26N
R01E
Sec 26,27
Owned by Private
Federal
Federal
Fish Passability 0.9
Total Erosion: 2.2988 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 71 ft.
, Width 76 ft.
, Height 12 ft.
Structure Inlet
Water Depth: 1.7 ft.
Water Velocity*: 1.54 ft./sec.
Structure Outlet
Water Depth: 1.4 ft.
Water Velocity*: 0.842 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.3 ft.
Bankfull Width: 25 ft.
Wetted Width: 15.8 ft.
Water Velocity: 1.67 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Paved
State Road
Road Condition: Good
Road Width at Culvert: 61 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 1.1494 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 1.1494 tons/year
Erosion Information
Total Erosion at Crossing: 2.2988 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Spotted Knapweed, Queen Anne's Lace