Road Stream Crossing Site AUS_PRNEW3
Au Sable River Watershed, Surface Drain
MacGregor Rd
Harrisville,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.64681
, -83.36244
T26N
R09E
Sec 29
Owned by Private
Fish Passability 0
Perch Height: 0.3 ft.
Total Erosion: 0.1501 tons/year
Severity: Severe
Year Inventoried: 2012
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall onto Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: New
Structure Interior: corrugated
Dimensions of Structure: Length 63 ft.
, Width 5.5 ft.
, Height 5.5 ft.
Perch Height: 0.3 ft.
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
There is a herd of cattle drinking in the outlet. A pool has been made. There is no riffle, as the water ends in a pool where the cows are drinking out of it.
Stream Information
Stream Flow: None
Scour Pool: Length 10 ft.
, Width 8 ft.
, Depth 0.5 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 23 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 0.2 ft.
Slope: More than 1:2
Downstream
Fill Depth: 0.3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.038 tons/year
Right Approach
Length: 318 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.464
Erosion: 0.1121 tons/year
Erosion Information
Total Erosion at Crossing: 0.1501 tons/year
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Yes, the culvert is set above the water level on both sides, so it isn't connecting the stream and is currently creating a barrier to fish passage.
A future visit to this site is recommended. To see if the culvert connects the stream at other times, to confirm which side is the inlet, and to evaluate effects of cows accessing the stream wsater and getting in it.
These non-native species were observerd at this site: Bittersweet Nightshade, Spotted Knapweed, Sweet Clover, Leafy Spurge, Autumn Olive