Road Stream Crossing Site AUS_OS070

Au Sable River Watershed, Red Creek (North)
Knot Rd
Big Creek Twp, Oscoda County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.65271 , -84.29169
T26N R01E Sec 14
Owned by Private
Federal
Fish Passability 0.9
Total Erosion: 7.2231 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)
Number of Structures: 1
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 45 ft. , Width 3.5 ft. , Height 2.8 ft.
Percentage Crushed: In Pipe: 1% to 25%
Structure Inlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.2 ft.
Bankfull Width: 14 ft.
Wetted Width: 6 ft.
Water Velocity: 0 ft./sec. (Measured with Float Test)
Dominant Substrate: Silt
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 23 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.6116 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.6116 tons/year
Erosion Information
Total Erosion at Crossing: 7.2231 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0.9
A future visit to this site is recommended. Culvert is in poor overall condition
These non-native species were observerd at this site: Queen Anne's Lace, St. Johnswort, Spotted Knapweed

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