Road Stream Crossing Site PM_M081
Pere Marquette River Watershed, Swan Creek tributary
Darr Rd
Eden Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.87181
, -86.25899
T17N
R16W
Sec 17
Owned by Private
Fish Passability 0.9
Total Erosion: 3.0073 tons/year
Severity: Severe
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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 27 ft.
, Width 2.5 ft.
, Height 2.5 ft.
Structure Inlet
Water Depth: 0.3 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 5 ft.
Wetted Width: 1.5 ft.
Water Velocity: 0.1 ft./sec.
(Measured with Meter)
Dominant Substrate: Silt
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 19 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5.5 ft.
Slope: Vertical
Downstream
Fill Depth: 5 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 210 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.248
Erosion: 1.3718 tons/year
Right Approach
Length: 240 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.302
Erosion: 1.6356 tons/year
Erosion Information
Total Erosion at Crossing: 3.0073 tons/year
Summary Information
Fish Passability 0.9