Road Stream Crossing Site PM_M048
Pere Marquette River Watershed, Black Creek
Johnson Rd
Custer Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 43.96189
, -86.2156
T18N
R16W
Sec 10
Owned by Private
Fish Passability 0.9
Total Erosion: 4.8418 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: Open Bottom Arch
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: New
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft.
, Width 14 ft.
, Height 6.5 ft.
Structure Inlet
Water Depth: 0.2 ft.
Water Velocity*: 0.6 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
fence across inlet to block cows from culvert
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 30 ft.
, Width 15 ft.
, Depth 0.8 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 14 ft.
Wetted Width: 8 ft.
Water Velocity: 0.6 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
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: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 345 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.469
Erosion: 0.8915 tons/year
Right Approach
Length: 450 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.583
Erosion: 3.9236 tons/year
Erosion Information
Total Erosion at Crossing: 4.8418 tons/year
Extent of Erosion: Moderate
Notes: downstream runs through pasture, erosion caused by cows accessing stream.
Large pile of sand on right upstream streambank.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Streambank |
20 ft. |
2 ft. |
0.1 ft. |
yes |
Sandy Loam |
0.0134 |
Right Downstream Streambank |
20 ft. |
3 ft. |
0.1 ft. |
yes |
Sandy Loam |
0.0134 |
Summary Information
Fish Passability 0.9