Road Stream Crossing Site AUS_PR007
Au Sable River Watershed, Tributary of Van Etten Creek
Clemens Rd
Harrisville,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.63459
, -83.38668
T26N
R09E
Sec 19
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.6361 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: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft.
, Width 5 ft.
, Height 5 ft.
Percentage Crushed:
Inlet: 0%
Outlet: 0%
In Pipe: 1% to 25%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
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: 0.7 ft.
Bankfull Width: 7.6 ft.
Wetted Width: 4 ft.
Water Velocity: 0.1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Silt
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 23.7 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4.4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 486.5 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.497
Erosion: 0.1896 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4466 tons/year
Erosion Information
Total Erosion at Crossing: 0.6361 tons/year
Summary Information
Fish Passability 0.5
These non-native species were observerd at this site: Honeysuckle, , Bittersweet Nightshade, Spotted Knapweed, Autumn Olive