Road Stream Crossing Site PM_L004
Pere Marquette River Watershed, Tank Creek East Branch
Wingleton Rd
Sweetwater Twp,
Lake County
Information collected by:
Site Location
GPS Coordinates: 43.932455
, -86.007704
T18N
R14W
Sec 20
Owned by Private
Perch Height: 0.2 ft.
Total Erosion: 0.3527 tons/year
Severity: Restored
Year Inventoried: 2014
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: Apron
Outlet Type: Cascade over Riprap
Structure Material: Concrete
Structure Substrate: None
General Conditions: New
Structure Interior: smooth
Dimensions of Structure: Length 94.3 ft.
, Width 4 ft.
, Height 4 ft.
Perch Height: 0.2 ft.
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.1 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured 0.1 ft. below Surface
(with Meter)
Additional Comments
Crossing replaced in 2010 and upstream dam removal in 2009. Stream gradient too steep to recess culvert further.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 4 ft.
Wetted Width: 2 ft.
Water Velocity: 0.4 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 11 ft.
Slope: 1:1.5
Downstream
Fill Depth: 12 ft.
Slope: 1:1
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.64
Erosion: 0.2327 tons/year
Right Approach
Length: 300 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.55
Erosion: 0.12 tons/year
Erosion Information
Total Erosion at Crossing: 0.3527 tons/year
Extent of Erosion: Stabilized
Notes:
Spillways functioning.
Summary Information
Erosion is an area of concern for this site.