Road Stream Crossing Site PM_M115

Pere Marquette River Watershed, Swan Creek tributary
Kinney Rd
Riverton Twp, Mason County
Information collected by:
Site Location
GPS Coordinates: 43.89012 , -86.28776
T17N R17W Sec 12
Owned by Private
Fish Passability 0.9
Total Erosion: 3.1086 tons/year
Severity: Severe
Year Inventoried: 2014
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Erosion
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Mitered
Outlet Type: Cascade over Riprap
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft. , Width 6 ft. , Height 6 ft.
Structure Inlet
Water Depth: 0.4 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured 0.4 ft. below Surface (with Meter)
Additional Comments
8x18 riprap at end of outlet
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 5 ft.
Wetted Width: 4 ft.
Water Velocity: 0.4 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 19 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 6 ft.
Slope: 1:1.5
Downstream
Fill Depth: 6 ft.
Slope: 1:2
Approaches
Left Approach
Length: 270 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.352
Erosion: 1.9107 tons/year
Right Approach
Length: 180 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.186
Erosion: 1.1174 tons/year
Erosion Information
Total Erosion at Crossing: 3.1086 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)
Right Upstream Embankment
4 ft.
3 ft.
1 ft.
yes
Gravelly Loam
0.004
Left Approach
270 ft.
1 ft.
0.1 ft.
yes
Sand
0.0297
Left Approach
270 ft.
1 ft.
0.1 ft.
yes
Gravel
0.027
Right Approach
180 ft.
2 ft.
0.1 ft.
yes
Sand
0.0198
Summary Information
Fish Passability 0.9