Road Stream Crossing Site AUS_RO013
Au Sable River Watershed, Tributary of South Branch Au Sable River
Pine Dr
AuSable Twp,
Roscommon County
Information collected by:
Site Location
GPS Coordinates: 44.43743
, -84.45847
T24N
R01W
Sec 33
Owned by State
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 5.2198 tons/year
Severity: Severe
Year Inventoried: 2013
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: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 31 ft.
, Width 1.3 ft.
, Height 1.2 ft.
Percentage Plugged:
Inlet: 0%
Outlet: 26% to 50%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: None
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
(Measured with Float Test)
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 18 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 867 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.557
Erosion: 2.3934 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 2.8264 tons/year
Erosion Information
Total Erosion at Crossing: 5.2198 tons/year
Extent of Erosion: Minor
Notes: Minor from road grading
Summary Information
Fish Passability 0.9