Road Stream Crossing Site PM_M145
Pere Marquette River Watershed, Pere Marquette tributary
1st St
Amber Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.9480986948464
, -86.3055903464556
T18N
R17W
Sec 14
Owned by Private
Total Erosion: 0.3185 tons/year
Severity: Minor
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: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft.
, Width 3 ft.
, Height 3 ft.
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.1 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: 0.3 ft.
Bankfull Width: 6 ft.
Wetted Width: 4.5 ft.
Water Velocity: 0.3 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: 6 ft.
Slope: Vertical
Downstream
Fill Depth: 5.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 400 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.48
Erosion: 0.1396 tons/year
Right Approach
Length: 200 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.23
Erosion: 0.1789 tons/year
Erosion Information
Total Erosion at Crossing: 0.3185 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.