Road Stream Crossing Site PM_L006
Pere Marquette River Watershed, Middle Branch
James Rd
Pleasant Plains Twp,
Lake County
Information collected by:
Site Location
GPS Coordinates: 43.85596
, -85.84099
T17N
R13W
Sec 22
Owned by Private
State
Federal
State
Federal
Total Erosion: 0.217 tons/year
Severity: Restored
Year Inventoried: 2014
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 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 27 ft.
, Width 31 ft.
, Height 5 ft.
Structure Inlet
Water Depth: 1.8 ft.
Water Velocity*: 2.8 ft./sec.
Structure Outlet
Water Depth: 1.5 ft.
Water Velocity*: 3.2 ft./sec.
*Water Velocities were measured 1 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 63 ft.
Wetted Width: 51 ft.
Water Velocity: 3.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 26 ft.
Location of Low Point: Other
Runoff Path: Roadway
Slope: Vertical
Slope: Vertical
Approaches
Left Approach
Length: 345 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.469
Erosion: 0.1391 tons/year
Right Approach
Length: 210 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.432
Erosion: 0.078 tons/year
Erosion Information
Total Erosion at Crossing: 0.217 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.