Road Stream Crossing Site AUS_PR216
Au Sable River Watershed, Surface Drain
MacGregor Rd
Harrisville,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.65601
, -83.36252
T26N
R09E
Sec 9,16
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.063 tons/year
Severity: Moderate
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: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 94 ft.
, Width 5 ft.
, Height 5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.1 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 1/2 Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 8.6 ft.
, Width 8.8 ft.
, Depth 1.4 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 6.6 ft.
Wetted Width: 4.4 ft.
Water Velocity: 0 ft./sec.
(Measured with Float Test)
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 29.8 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 5.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 158 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.405
Erosion: 0.063 tons/year
Erosion Information
Total Erosion at Crossing: 0.063 tons/year
Summary Information
Fish Passability 0.5
Fish Passage is an area of concern for this site.
Yes, the outlet has rocks piled in front and the water is shallow between them so it would be a barrier to fish passage. The outlet is almost perched.
A future visit to this site is recommended. To evaluate whether the outlet is a barrier at other times of the year.
These non-native species were observerd at this site: Spotted Knapweed