Road Stream Crossing Site AUS_RO006
Au Sable River Watershed, Asum Creek
North Keno Rd
AuSable Twp,
Roscommon County
Information collected by:
Site Location
GPS Coordinates: 44.4892
, -84.45107
T24N
R01W
Sec 9
Owned by Private
State
State
Fish Passability 1
Structure is NOT Perched
Total Erosion: 2.5405 tons/year
Severity: Moderate
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 65 ft.
, Width 3 ft.
, Height 2.2 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0.6 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Additional Comments
private-west & state-east
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 12 ft.
, Width 5 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 6 ft.
Wetted Width: 3 ft.
Water Velocity: 0.16 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 32.2 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 640 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.526
Erosion: 0.3583 tons/year
Right Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 2.1821 tons/year
Erosion Information
Total Erosion at Crossing: 2.5405 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Poor alignment of culvert
Summary Information
Fish Passability 1
A future visit to this site is recommended. To fix alignment issue
These non-native species were observerd at this site: Canada Thistle, Spotted Knapweed