Road Stream Crossing Site AUS_PR074
Au Sable River Watershed, Tributary of East Branch Pine River
Petit Rd
Gustin Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.60534
, -83.44324
T26N
R08E
Sec 34
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 3.4072 tons/year
Severity: Severe
Year Inventoried: 2013
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
Dimensions of Structure: Length 41 ft.
, Width 3 ft.
, Height 3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 0.6 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 1/2 Bankfull
Scour Pool: Length 10 ft.
, Width 5 ft.
, Depth 1.1 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 6.7 ft.
Wetted Width: 2.2 ft.
Water Velocity: 1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 0.9 ft.
Slope: More than 1:2
Downstream
Fill Depth: 0.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 124.2 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.39
Erosion: 0.2667 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.1405 tons/year
Erosion Information
Total Erosion at Crossing: 3.4072 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Bittersweet Nightshade, Spotted Knapweed, Reed Canarygrass?