Road Stream Crossing Site PM_M009
Pere Marquette River Watershed, Carr Creek
Hawley Rd
Logan Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.87364
, -86.07148
T17N
R15W
Sec 11
Owned by Private
Fish Passability 0.9
Total Erosion: 0.3165 tons/year
Severity: Moderate
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
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Dimensions of Structure: Length 22 ft.
, Width 30 ft.
, Height 8 ft.
Structure Inlet
Water Depth: 0.5 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Water Velocity*: 0.6 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 20 ft.
Wetted Width: 18 ft.
Water Velocity: 1.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Approaches
Left Approach
Length: 240 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.438
Erosion: 0.0765 tons/year
Right Approach
Length: 250 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.32
Erosion: 0.24 tons/year
Erosion Information
Total Erosion at Crossing: 0.3165 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0.9