Road Stream Crossing Site AUS_OS133
Au Sable River Watershed, Au Sable River
Evans Rd
Mentor Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.643086
, -83.939845
T26N
R04E
Sec 15
Owned by Federal
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 1.1174 tons/year
Severity: Moderate
Year Inventoried: 2012
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: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
36 ft. |
37.5 ft. |
14 ft. |
Metal |
2 |
36 ft. |
77 ft. |
14 ft. |
Metal |
3 |
36 ft. |
27 ft. |
14 ft. |
Metal |
Structure Interior: smooth
Dimensions of Structure: Length 77 ft.
, Width 36 ft.
, Height 14 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 3.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.7 ft./sec.
Structure Outlet
Water Depth: 3.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.9 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
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: 1.6 ft.
Bankfull Width: 163 ft.
Wetted Width: 159 ft.
Water Velocity: 2.7 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: Roadway
Embankments
Upstream
Fill Depth: 0.8 ft.
Slope: Vertical
Downstream
Fill Depth: 0.8 ft.
Slope: Vertical
Approaches
Left Approach
Length: 618 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.686
Erosion: 0.4767 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6407 tons/year
Erosion Information
Total Erosion at Crossing: 1.1174 tons/year
Summary Information
Fish Passability 0.5