Road Stream Crossing Site PM_O006
Pere Marquette River Watershed, Freeman Creek tributary
192nd Ave
Colfax Twp,
Oceana County
Information collected by:
Site Location
GPS Coordinates: 43.7527393660292
, -86.0782717913389
T16N
R15W
Sec 26
Owned by Private
Total Erosion: 0.2544 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: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 105 ft.
, Width 4 ft.
, Height 4 ft.
Structure Inlet
Water Depth: 0.6 ft.
Water Velocity*: 1.9 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Water Velocity*: 2.5 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Additional Comments
inlet is newer and 4ft plastic outlet is older and 5ft metal
Stream Information
Stream Flow: Bankfull
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 7 ft.
Wetted Width: 7 ft.
Water Velocity: 1.5 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: Ditch
Embankments
Upstream
Fill Depth: 12 ft.
Slope: 1:2
Downstream
Fill Depth: 13 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 450 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.49
Erosion: 0.1604 tons/year
Right Approach
Length: 240 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.438
Erosion: 0.0765 tons/year
Erosion Information
Total Erosion at Crossing: 0.2544 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 |
20 ft. |
2 ft. |
1 ft. |
yes |
Loam |
0.0176 |
Summary Information
Erosion is an area of concern for this site.