Road Stream Crossing Site AUS_PR009
Au Sable River Watershed, Tributary of Van Etten Creek
Dellar Rd
Harrisville,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.62017
, -83.38007
T26N
R09E
Sec 29
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 0.5017 tons/year
Severity: Minor
Year Inventoried: 2013
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Other
Outlet Type: Other
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 30 ft.
, Width 42 ft.
, Height 8.3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 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: 1.5 ft.
Bankfull Width: 40 ft.
Wetted Width: 20 ft.
Water Velocity: 0.2 ft./sec.
(Measured with Float Test)
Dominant Substrate: Silt
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 27.7 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2 ft.
Slope: Vertical
Downstream
Fill Depth: 2 ft.
Slope: Vertical
Approaches
Left Approach
Length: 589.1 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.518
Erosion: 0.2793 tons/year
Right Approach
Length: 488 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.498
Erosion: 0.2224 tons/year
Erosion Information
Total Erosion at Crossing: 0.5017 tons/year
Summary Information
Fish Passability 1
A future visit to this site is recommended. There is a small man made damn a ways below the outlet. Also the water quality seems poor-cloudy and smelly which is probably not due to the culvert but rather something upstream such as cow manure.
These non-native species were observerd at this site: Leafy Spurge, Spotted Knapweed, Autumn Olive