Road Stream Crossing Site AUS_OS066
Au Sable River Watershed, Tributary of East Branch Big Creek
M-72
Big Creek Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.63409
, -84.24817
T26N
R02E
Sec 19
Owned by Private
Total Erosion: 1.7712 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: Round
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 81 ft.
, Width 1.9 ft.
, Height 1.9 ft.
Structure Inlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: None
Dominant Substrate: Organics
Road Information
Paved
State Road
Road Condition: Good
Road Width at Culvert: 47 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.6 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.8856 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.8856 tons/year
Erosion Information
Total Erosion at Crossing: 1.7712 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.