Road Stream Crossing Site PM_L036

Pere Marquette River Watershed, Middle Branch tributary
Saddler Rd
Chase Twp, Lake County
Information collected by:
Site Location
GPS Coordinates: 43.87034 , -85.62242
T17N R11W Sec 16
Owned by Private
Fish Passability 0.9
Total Erosion: 4.3785 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: Sand
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 30 ft. , Width 12 ft. , Height 1.2 ft.
Structure Inlet
Water Depth: 0.5 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.2 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 4 ft.
Wetted Width: 2 ft.
Water Velocity: 0.1 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Poor
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.1 ft.
Slope: 1:2
Downstream
Fill Depth: 1.2 ft.
Slope: 1:2
Approaches
Left Approach
Length: 210 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.248
Erosion: 1.444 tons/year
Right Approach
Length: 360 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.478
Erosion: 2.9316 tons/year
Erosion Information
Total Erosion at Crossing: 4.3785 tons/year
Extent of Erosion: Minor
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Downstream Embankment
6 ft.
2 ft.
0.5 ft.
yes
Gravel
0.003
Summary Information
Fish Passability 0.9