Road Stream Crossing Site AUS_CR052
Au Sable River Watershed, Barker Creek
Wakely Bridge Rd
Grayling Twp,
Crawford County
Information collected by:
Site Location
GPS Coordinates: 44.67277
, -84.51629
T26N
R02W
Sec 2
Owned by State
Fish Passability 0.9
Total Erosion: 3.87 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 50 ft.
, Width 6.5 ft.
, Height 6.1 ft.
Percentage Plugged:
In Pipe: 1% to 25%
Structure Inlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 1.58 ft./sec.
Structure Outlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.83 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.9 ft.
Bankfull Width: 18.8 ft.
Wetted Width: 12 ft.
Water Velocity: 0.85 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 29.5 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 380 ft.
Slope: 6% to 10%
Vegetation: Partial
LS Factor: 1.978
Erosion: 0.733 tons/year
Right Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Partial
LS Factor: 3.15
Erosion: 3.0719 tons/year
Erosion Information
Total Erosion at Crossing: 3.87 tons/year
Extent of Erosion: Moderate
Notes: Above and around downstream culvert.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream |
31 ft. |
6.5 ft. |
0.3 ft. |
yes |
Gravel |
0.0651 |
Summary Information
Fish Passability 0.9
A future visit to this site is recommended. To assess erosion above culverts
These non-native species were observerd at this site: Spotted Knapweed, Queen Anne's Lace