Road Stream Crossing Site LTB-151
Little Traverse Bay Watershed, Unknown tributary
US-31
Resort Twp,
Emmet County
Information collected by:
Site Location
GPS Coordinates: 45.35851178
, -85.03835517
Fish Passability 0
Perch Height: 2 ft.
Total Erosion: 0.3306 tons/year
Severity: Severe
Year Inventoried: 2014
Crossing Information
Type of Crossing: Bridge
Structure Shape: Square/Rectangle
Inlet Type: Headwall
Outlet Type: Freefall into Pool
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 110 ft.
, Width 5.9 ft.
, Height 6 ft.
Perch Height: 2 ft.
Structure Inlet
Water Depth: 0.01 ft.
Embedded Depth of Structure: 0.05 ft.
Water Velocity*: 0.07 ft./sec.
Structure Outlet
Water Depth: 0.01 ft.
Embedded Depth of Structure: 0.05 ft.
Water Velocity*: 0.05 ft./sec.
*Water Velocities were measured 0.006 ft. below Surface
(with Meter)
Additional Comments
Old site ID: LTB-20.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 4 ft.
, Width 7 ft.
, Depth 1 ft.
Upstream Pond: Length 4 ft.
, Width 4 ft.
, Depth 1 ft.
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 14.75 ft.
Wetted Width: 13 ft.
Water Velocity: 0.02 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Paved
Federal Road
Road Condition: Good
Road Width at Culvert: 40 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4 ft.
Slope: Vertical
Downstream
Fill Depth: 12 ft.
Slope: Vertical
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.3306 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.3306 tons/year
Extent of Erosion: Stabilized
Summary Information
Fish Passability 0
A future visit to this site is recommended. Low flow at ltbay culvert upstream affects this
These non-native species were observerd at this site: invasive Cattails at outlet