Road Stream Crossing Site AUS_OS117
Au Sable River Watershed, Wolf Creek
South River Rd (County Rd 602)
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.652317
, -84.11667
T26N
R03E
Sec 7,18
Total Erosion: 2.2083 tons/year
Severity: Moderate
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: Pipe Arch
Inlet Type: Wingwall 30-70 Degree
Outlet Type: Cascade over Riprap
Structure Material: Metal
Structure Substrate: Sand
General Conditions: New
Structure Interior: corrugated
Dimensions of Structure: Length 55 ft.
, Width 9 ft.
, Height 6 ft.
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 3 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 2 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 10 ft.
, Width 18 ft.
, Depth 1.5 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 30 ft.
Wetted Width: 6 ft.
Water Velocity: 1.2 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 32 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 200 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.43
Erosion: 0.7581 tons/year
Right Approach
Length: 350 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.47
Erosion: 1.4501 tons/year
Erosion Information
Total Erosion at Crossing: 2.2083 tons/year
Extent of Erosion: Moderate
Notes:
None noted
Summary Information
Erosion is an area of concern for this site.