Road Stream Crossing Site TW018
Tawas River Watershed
Oates Rd
Tawas Twp,
Iosco County
Information collected by:
Site Location
GPS Coordinates: 44.24817
, -83.57274
T21N
R07E
Sec 3
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 0.8755 tons/year
Severity: Moderate
Year Inventoried: 2012
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: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 20 ft.
, Width 10 ft.
, Height 7.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 3.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 3.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 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 55 ft.
, Width 55 ft.
, Depth 3.1 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 100 ft.
Wetted Width: 3 ft.
Water Velocity: 0.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 18 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1 ft.
Slope: Vertical
Downstream
Fill Depth: 1 ft.
Slope: Vertical
Approaches
Left Approach
Length: 280 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.452
Erosion: 0.6276 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.2479 tons/year
Erosion Information
Total Erosion at Crossing: 0.8755 tons/year
Summary Information
Fish Passability 0.9
Erosion is an area of concern for this site.
No embankment above the crossing, sediment can easily enter the stream from the road