Road Stream Crossing Site PM_M042

Pere Marquette River Watershed, Big South Branch tributary
Stephens Rd
Custer Twp, Mason County
Information collected by:
Site Location
GPS Coordinates: 43.91829 , -86.19887
T18N R16W Sec 35
Owned by Private
Fish Passability 0.5
Total Erosion: 1.4925 tons/year
Severity: Moderate
Year Inventoried: 2014
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 40 ft. , Width 2 ft. , Height 2 ft.
Water Depth: 0 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Water Velocity*: 0 ft./sec.
Additional Comments
access to inlet blocked by barbed wire fence
Stream Information
Stream Flow: None
Riffle Information
Water Depth: 0 ft.
Water Velocity: 0 ft./sec.
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 20 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4 ft.
Slope: 1:2
Downstream
Fill Depth: 4 ft.
Slope: 1:2
Approaches
Left Approach
Length: 60 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.342
Erosion: 0.1131 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 1.3774 tons/year
Erosion Information
Total Erosion at Crossing: 1.4925 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 Upstream Streambank
4 ft.
1 ft.
0.5 ft.
yes
Gravel
0.002
Summary Information
Fish Passability 0.5