Road Stream Crossing Site AUS_PR066
Au Sable River Watershed, Tributary of East Branch Pine River
Cruzen Rd
Gustin Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.62853
, -83.46352
T26N
R08E
Sec 21,22
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.7703 tons/year
Severity: Moderate
Year Inventoried: 2012
Inlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 52 ft.
, Width 6 ft.
, Height 3.8 ft.
Percentage Crushed:
Inlet: 0%
Outlet: 1% to 25%
In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 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 ft.
Water Velocity*: 1.1 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
The culvert seems to lay flat (in pipe) then angle downwards near the outlet, where the water speeds up.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 29 ft.
, Width 16 ft.
, Depth 4.9 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 7 ft.
Wetted Width: 4.9 ft.
Water Velocity: 0.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 23 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4.5 ft.
Slope: 1:2
Downstream
Fill Depth: 4.8 ft.
Slope: 1:2
Approaches
Left Approach
Length: 805 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.551
Erosion: 0.3369 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4334 tons/year
Erosion Information
Total Erosion at Crossing: 0.7703 tons/year
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. To evaluate whether anything should/can be done about the scour pool.
These non-native species were observerd at this site: Autumn Olive, Sweet Clover