Road Stream Crossing Site PM_M091
Pere Marquette River Watershed, Swan Creek
Chauvez Rd
Riverton Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.90494
, -86.30779
T18N
R17W
Sec 35
Owned by Private
Structure is NOT Perched
Total Erosion: 0.2109 tons/year
Severity: Restored
Year Inventoried: 2015
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: Concrete
Structure Substrate: Sand
General Conditions: New
Structure Interior: smooth
Dimensions of Structure: Length 42 ft.
, Width 67 ft.
, Height 7 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Additional Comments
Installed 2014.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 22 ft.
Wetted Width: 20 ft.
Water Velocity: 1.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 29 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 250 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.1055 tons/year
Right Approach
Length: 250 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.1055 tons/year
Erosion Information
Total Erosion at Crossing: 0.2109 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.
No, recently replaced.
These non-native species were observerd at this site: Thistle, Spotted Knapweed