Road Stream Crossing Site PM_M014
Pere Marquette River Watershed, Carr Creek tributary
Tyndall Rd
Logan Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.86807
, -86.03869
T17N
R15W
Sec 13
Owned by Private
Total Erosion: 0.3809 tons/year
Severity: Minor
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: Concrete
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 20 ft.
, Width 18 ft.
, Height 3.5 ft.
Structure Inlet
Water Depth: 0.5 ft.
Water Velocity*: 1.2 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Water Velocity*: 1.2 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 9 ft.
Wetted Width: 7 ft.
Water Velocity: 2.5 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 18 ft.
Location of Low Point: Other
Runoff Path: Ditch
Slope: Vertical
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.3392 tons/year
Right Approach
Length: 170 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.412
Erosion: 0.0417 tons/year
Erosion Information
Total Erosion at Crossing: 0.3809 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.