Road Stream Crossing Site PM_M150
Pere Marquette River Watershed, St. Clair Creek tributary
Dennis Rd
Amber Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.94099
, -86.36848
T18N
R17W
Sec 20
Owned by Private
Total Erosion: 1.1504 tons/year
Severity: Moderate
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: Good
Structure Interior: corrugated
Dimensions of Structure: Length 38 ft.
, Width 2 ft.
, Height 2 ft.
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0.6 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0 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: 0.2 ft.
Bankfull Width: 2.5 ft.
Wetted Width: 2 ft.
Water Velocity: 0.1 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 16 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 3 ft.
Slope: 1:1.5
Downstream
Fill Depth: 3.5 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 200 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.23
Erosion: 1.0843 tons/year
Right Approach
Length: 200 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0441 tons/year
Erosion Information
Total Erosion at Crossing: 1.1504 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 Approach |
200 ft. |
1 ft. |
0.1 ft. |
no |
Sand |
0.022 |
Summary Information
Erosion is an area of concern for this site.