Road Stream Crossing Site AUS_RO014
Au Sable River Watershed, Tributary of South Branch Au Sable River
Pine Dr
AuSable Twp,
Roscommon County
Information collected by:
Site Location
GPS Coordinates: 44.43747
, -84.46307
T24N
R01W
Sec 32
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 1.1846 tons/year
Severity: Severe
Year Inventoried: 2013
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 1.3 ft.
, Height 1.3 ft.
Structure is NOT Perched
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 8.5 ft.
, Width 11.5 ft.
, Depth 0.5 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 6 ft.
Wetted Width: 2 ft.
Water Velocity: 0 ft./sec.
(Measured with Float Test)
Dominant Substrate: Organics
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 19 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 460 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.492
Erosion: 1.1846 tons/year
Erosion Information
Total Erosion at Crossing: 1.1846 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0
A future visit to this site is recommended. Alignment issue- see scour pool
These non-native species were observerd at this site: Spotted Knapweed, Queen Anne's Lace