Road Stream Crossing Site AUS_RO031
Au Sable River Watershed, Cedar Creek
F-97
Richfield Twp,
Roscommon County
Information collected by:
Site Location
GPS Coordinates: 44.38253
, -84.41026
T23N
R01W
Sec 14
Owned by State
Fish Passability 0.9
Total Erosion: 1.3484 tons/year
Severity: Moderate
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch,Open Bottom Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 55 ft.
, Width 22 ft.
, Height 4.2 ft.
Structure Inlet
Water Depth: 1.9 ft.
Water Velocity*: 0.276 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Water Velocity*: 0.404 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.7 ft.
Bankfull Width: 19.5 ft.
Wetted Width: 14.5 ft.
Water Velocity: 0.65 ft./sec.
(Measured with Float Test)
Dominant Substrate: Silt
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 35.6 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6708 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6708 tons/year
Erosion Information
Total Erosion at Crossing: 1.3484 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Silt fences need to be installed
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Approach |
8 ft. |
4.5 ft. |
1 ft. |
yes |
Silt |
0.0068 |
Summary Information
Fish Passability 0.9
A future visit to this site is recommended. Install silt fences
These non-native species were observerd at this site: Spotted Knapweed, Queen Anne's Lace, European Swamp Thistle