Road Stream Crossing Site AUS_OS022
Au Sable River Watershed, Tributary of Beaver Creek
County Rd 489
Greenwood Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.7036
, -84.29235
T27N
R01E
Sec 26,27
Owned by Private
State
State
Structure is NOT Perched
Total Erosion: 10.6193 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)
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Concrete
Structure Substrate: None
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 70 ft.
, Width 2 ft.
, Height 2 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.22 ft./sec.
Structure Outlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.286 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 6.5 ft.
, Width 6.5 ft.
, Depth 1.2 ft.
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 41 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 2.7785 tons/year
Right Approach
Length: 1000 ft.
Slope: More Than 10%
Vegetation: Heavy
LS Factor: 5.785
Erosion: 7.8408 tons/year
Erosion Information
Total Erosion at Crossing: 10.6193 tons/year
Extent of Erosion: Minor
Notes: Due to roadway
Summary Information
Fish Passage is an area of concern for this site.
High water velocity at outlet will cause fish passage issues.
A future visit to this site is recommended. To assess how to change high water velocity at outlet.
These non-native species were observerd at this site: Spotted Knapweed, Leafy Spurge