Road Stream Crossing Site AUS_OS010
Au Sable River Watershed, Wright Creek
Red Oak Rd (County 489)
Greenwood Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.76303
, -84.30786
T27N
R01E
Sec 3
Owned by Private
State
State
Fish Passability 0.5
Total Erosion: 3.241 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: Ellipse
Inlet Type: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Dimensions of Structure: Length 96 ft.
, Width 4.5 ft.
, Height 3.3 ft.
Percentage Plugged:
Inlet: 26% to 50%
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.857 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.02 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 13 ft.
, Width 9 ft.
, Depth 1.5 ft.
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 14 ft.
Wetted Width: 8.5 ft.
Water Velocity: 1.02 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 35.5 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 6 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 780 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.893
Erosion: 1.7328 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6689 tons/year
Erosion Information
Total Erosion at Crossing: 3.241 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Eroding banks downstream.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Downstream |
25 ft. |
26 ft. |
3.5 ft. |
yes |
Sandy Loam |
0.588 |
Left Downstream |
17 ft. |
6.5 ft. |
2.2 ft. |
yes |
Sandy Loam |
0.2513 |
Summary Information
Fish Passability 0.5
Erosion is an area of concern for this site.
Installation of silt fences and revegetation of eroded areas would be recommended.
A future visit to this site is recommended. To fix erosion.
These non-native species were observerd at this site: Oxeye Daisy, Spotted Knapweed, Queen Anne's Lace, European Swamp Thistle