Road Stream Crossing Site PM_L005
Pere Marquette River Watershed, Sweetwater Creek
Wingleton Rd
Sweetwater Twp,
Lake County
Information collected by:
Site Location
GPS Coordinates: 43.932119
, -85.98546
T18N
R14W
Sec 21
Owned by Private
Federal
Federal
Site ID
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: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Sand
General Conditions: New
Structure Interior: smooth
Dimensions of Structure: Length 20 ft.
, Width 16 ft.
, Height 8 ft.
Structure Inlet
Water Depth: 0.5 ft.
Water Velocity*: 0.7 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Water Velocity*: 0.9 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Additional Comments
Crossing replaced in 2010 with USFS ARRA $, Road Commission match, & CRA match under partnership.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 11 ft.
Wetted Width: 9 ft.
Water Velocity: 0.6 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 26 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 635 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.525
Erosion: 0.2867 tons/year
Right Approach
Length: 425 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.485
Erosion: 0.1772 tons/year
Erosion Information
Total Erosion at Crossing: 0.4638 tons/year
Extent of Erosion: Stabilized
Notes:
3 spillways were constructed.
Summary Information
Erosion is an area of concern for this site.