Road Stream Crossing Site AUS_OS151
Au Sable River Watershed, Wright Creek
Pine Haven Rd
Greenwood Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.76505
, -84.27721
T27N
R01E
Sec 2
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 1.4659 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: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 17.3 ft.
, Width 2.8 ft.
, Height 2.8 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.9 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.8 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 68.1 ft.
, Width 20 ft.
Riffle Information
Water Depth: 2.2 ft.
Bankfull Width: 6 ft.
Wetted Width: 4 ft.
Water Velocity: 0.1 ft./sec.
(Measured with Meter)
Dominant Substrate: Organics
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 17 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 0.1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 0.1 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 261.9 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.445
Erosion: 0.5455 tons/year
Right Approach
Length: 406 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.481
Erosion: 0.9149 tons/year
Erosion Information
Total Erosion at Crossing: 1.4659 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Corrective action already in place-culvert to be replaced 5/29/2012.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Ditch |
1 ft. |
5 ft. |
0.6 ft. |
yes |
Sand |
0.0046 |
Right Upstream Ditch |
1 ft. |
1 ft. |
0.1 ft. |
yes |
Sand |
0.0008 |
Summary Information
Fish Passability 0.9
Erosion is an area of concern for this site.
Yes, the road and culvert are basically the same size so the road is washing right over the culverts into the stream.
A future visit to this site is recommended. Culvert will be replaced 5/29/2012 but there are multiple erosion sites.