Road Stream Crossing Site AUS_PR110
Au Sable River Watershed, Tributary of Gimlet Creek
Hubbard Lake Rd
Gustin Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.96931
, -84.68147
T26N
R08E
Sec 31
Owned by Private
Fish Passability 0.5
Total Erosion: 1.1484 tons/year
Severity: Moderate
Year Inventoried: 2013
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Structure Shape: Round
Inlet Type: Apron
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 110 ft.
, Width 4.6 ft.
, Height 4.2 ft.
Percentage Plugged:
Inlet: 0%
Percentage Crushed:
Inlet: 0%
Structure Inlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 1.7 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 Bankfull
Scour Pool: Length 23 ft.
, Width 20 ft.
, Depth 3 ft.
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 7.1 ft.
Wetted Width: 4.4 ft.
Water Velocity: 0.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 34 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 925 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.563
Erosion: 0.5848 tons/year
Right Approach
Length: 896 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.56
Erosion: 0.5636 tons/year
Erosion Information
Total Erosion at Crossing: 1.1484 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. Culvert is rusted through.