Road Stream Crossing Site AUS_PR088
Au Sable River Watershed, Tributary of South Branch Pine River
F-30
Mikado Twp,
Alcona County
Information collected by:
Site Location
GPS Coordinates: 44.59111
, -83.48199
T25N
R08E
Sec 4
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 0.9421 tons/year
Severity: Minor
Year Inventoried: 2012
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: Open Bottom Square/Rectangle
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 31 ft.
, Width 6 ft.
, Height 4.2 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 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: 0.3 ft.
Bankfull Width: 3.4 ft.
Wetted Width: 2.7 ft.
Water Velocity: 0.1 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 25 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4.3 ft.
Slope: Vertical
Downstream
Fill Depth: 4.3 ft.
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4711 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4711 tons/year
Erosion Information
Total Erosion at Crossing: 0.9421 tons/year
Summary Information
Fish Passability 1
A future visit to this site is recommended. Culvert isn't in great shape. Above outlet it's starting to cave in.
These non-native species were observerd at this site: Sweet Clover, Spotted Knapweed