Road Stream Crossing Site AUS_IS010
Au Sable River Watershed, Bayou
Old US 23
AuSable Twp,
Iosco County
Information collected by:
Site Location
GPS Coordinates: 44.41208
, -83.33762
T23N
R09E
Sec 4,9
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 0.3961 tons/year
Severity: Minor
Year Inventoried: 2012
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: Open Bottom Square/Rectangle
Inlet Type: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 51 ft.
, Width 7 ft.
, Height 3.8 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 0.3 ft.
Wetted Width: 2.6 ft.
Water Velocity: 0.4 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 31 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 5.4 ft.
Slope: 1:2
Downstream
Fill Depth: 5.5 ft.
Slope: 1:2
Approaches
Left Approach
Length: 322.1 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.464
Erosion: 0.1533 tons/year
Right Approach
Length: 478.1 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.496
Erosion: 0.2428 tons/year
Erosion Information
Total Erosion at Crossing: 0.3961 tons/year
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Leafy Spurge, Autumn Olive, shrubby honeysuckle, garlic mustard