Road Stream Crossing Site AUS_AL010
Au Sable River Watershed, Tributary of Smith Creek
Curtisville Rd
Curtis Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.58055
, -83.86688
T25N
R05E
Sec 8
Owned by Federal
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 1.1941 tons/year
Severity: Moderate
Year Inventoried: 2013
Site ID
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: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 31.6 ft.
, Width 1.4 ft.
, Height 1.4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 7.8 ft.
Wetted Width: 0.8 ft.
Water Velocity: 1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Sand
County Road
Road Condition: Fair
Road Width at Culvert: 15.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 3 ft.
Slope: Vertical
Downstream
Fill Depth: 5.4 ft.
Slope: Vertical
Approaches
Left Approach
Length: 307 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.461
Erosion: 0.6048 tons/year
Right Approach
Length: 300 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.46
Erosion: 0.5893 tons/year
Erosion Information
Total Erosion at Crossing: 1.1941 tons/year
Extent of Erosion: Minor
Notes: Minor erosion on road because there is little/no embankment
Summary Information
Fish Passability 0.9