Road Stream Crossing Site PM_L067
Pere Marquette River Watershed, Sanborn Creek tributary
40th St
Cherry Valley Twp,
Lake County
Information collected by:
Site Location
GPS Coordinates: 43.916135
, -85.690398
T18N
R12W
Sec 36
Owned by Private
State
State
Site ID
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: New
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft.
, Width 5.5 ft.
, Height 4.2 ft.
Structure Inlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 1.5 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 1.5 ft.
Water Velocity*: 1.5 ft./sec.
*Water Velocities were measured 0.6 ft. below Surface
(with Meter)
Additional Comments
Site constructed & restored summer 2014, along with L065.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 8 ft.
Wetted Width: 6 ft.
Water Velocity: 0.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: 1:2
Approaches
Left Approach
Length: 220 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.434
Erosion: 0.4735 tons/year
Right Approach
Length: 100 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.38
Erosion: 0.1884 tons/year
Erosion Information
Total Erosion at Crossing: 0.6619 tons/year
Extent of Erosion: Stabilized
Summary Information
Erosion is an area of concern for this site.