Road Stream Crossing Site PM_M117
Pere Marquette River Watershed, Swan Creek tributary
Schwass Rd
Riverton Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.88686
, -86.31849
T17N
R17W
Sec 10
Fish Passability 0
Perch Height: 2 ft.
Total Erosion: 1.1773 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: Ellipse
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 65 ft.
, Width 7 ft.
, Height 5 ft.
Perch Height: 2 ft.
Water Depth: 0 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: None
Scour Pool: Length 14 ft.
, Width 14 ft.
, Depth 2.5 ft.
Riffle Information
Water Depth: 0 ft.
Water Velocity: 0 ft./sec.
Dominant Substrate: Clay
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5 ft.
Slope: 1:1.5
Downstream
Fill Depth: 6 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 195 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.427
Erosion: 0.5046 tons/year
Right Approach
Length: 195 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.427
Erosion: 0.5046 tons/year
Erosion Information
Total Erosion at Crossing: 1.1773 tons/year
Extent of Erosion: Moderate
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Downstream Embankment |
10 ft. |
8 ft. |
0.2 ft. |
yes |
Gravel |
0.014 |
Left Downstream Embankment |
10 ft. |
8 ft. |
0.2 ft. |
yes |
Gravel |
0.014 |
Left Approach |
100 ft. |
2 ft. |
0.1 ft. |
yes |
Gravel |
0.07 |
Right Approach |
100 ft. |
2 ft. |
0.1 ft. |
no |
Gravel |
0.07 |
Summary Information
Fish Passability 0
Erosion is an area of concern for this site.
A future visit to this site is recommended. Perched