Road Stream Crossing Site AUS_OS005
Au Sable River Watershed, Tributary of East Branch Big Creek
Farrington Rd
Greenwood Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.78343
, -84.34257
T28N
R01E
Sec 29
Owned by Private
State
State
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 3.5848 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: 2
Structure Shape: Round
Inlet Type: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Poor
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
2 |
2.6 ft. |
44.5 ft. |
2.6 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 34 ft.
, Width 1.8 ft.
, Height 1.7 ft.
Percentage Plugged:
Inlet: 76% to 100%
Outlet: 0%
In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 1.67 ft./sec.
Structure Outlet
Water Depth: 1.1 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 2.286 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 26 ft.
, Width 12 ft.
, Depth 1.7 ft.
Upstream Pond: Length 30 ft.
, Width 30 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 12 ft.
Wetted Width: 6 ft.
Water Velocity: 2.198 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: 1:2
Downstream
Fill Depth: 2 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 630 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.525
Erosion: 1.8206 tons/year
Right Approach
Length: 520 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.504
Erosion: 1.444 tons/year
Erosion Information
Total Erosion at Crossing: 3.5848 tons/year
Extent of Erosion: Moderate
Notes: Some around downstream bank and over culverts
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Downstream |
13 ft. |
5 ft. |
3.2 ft. |
yes |
Sand |
0.3203 |
Summary Information
Fish Passability 0.5
Fish Passage is an area of concern for this site.
Yes, trash racks in front of culverts upstream and downstream need to be checked. Trash rack is extremely plugged, and little or no fish entrance is possible.
A future visit to this site is recommended. Extremely plugged trash racks/culverts need to be cleaned out.
These non-native species were observerd at this site: Spotted Knapweed, Yellow Sweet Clover