Road Stream Crossing Site AUS_RO011
Au Sable River Watershed, South Creek
Pine Dr
AuSable Twp,
Roscommon County
Information collected by:
Site Location
GPS Coordinates: 44.43673
, -84.42628
T24N
R01W
Sec 34
Owned by State
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 9.3884 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
2.3 ft. |
30.5 ft. |
2.5 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 30 ft.
, Width 2.5 ft.
, Height 2.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.22 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.12 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 70 ft.
, Width 41 ft.
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 11 ft.
Wetted Width: 6.5 ft.
Water Velocity: 1.32 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 19 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.8 ft.
Slope: 1:2
Downstream
Fill Depth: 2 ft.
Slope: 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 2.9835 tons/year
Right Approach
Length: 332 ft.
Slope: More Than 10%
Vegetation: Heavy
LS Factor: 3.686
Erosion: 6.405 tons/year
Erosion Information
Total Erosion at Crossing: 9.3884 tons/year
Extent of Erosion: Minor
Notes: Gravel from road grading
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. Realignment issues- lots of impounded water
These non-native species were observerd at this site: Spotted Knapweed