Road Stream Crossing Site PM_L037

Pere Marquette River Watershed, Middle Branch
64th St
Chase Twp, Lake County
Information collected by:
Site Location
GPS Coordinates: 43.87346 , -85.61644
T17N R11W Sec 10
Owned by Private
Fish Passability 0.9
Total Erosion: 0.2402 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: Fair
Dimensions of Structure: Length 28 ft. , Width 21 ft. , Height 9 ft.
Structure Inlet
Water Depth: 0.9 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Water Velocity*: 0.8 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: 0.4 ft.
Bankfull Width: 21 ft.
Wetted Width: 12 ft.
Water Velocity: 0.7 ft./sec. (Measured with Meter)
Dominant Substrate: Cobble
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: 215 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.257
Erosion: 0.1965 tons/year
Right Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.0436 tons/year
Erosion Information
Total Erosion at Crossing: 0.2402 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0.9