Road Stream Crossing Site AUS_PR061

Au Sable River Watershed, Tributary of East Branch Pine River
F-41
Gustin Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.64518 , -83.42328
T26N R08E Sec 13,14
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 1.2625 tons/year
Severity: Moderate
Year Inventoried: 2013
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: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 62.5 ft. , Width 8.5 ft. , Height 7.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0.7 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Additional Comments
The culvert seems bigger than necessary for the stream width.
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: 0.5 ft.
Bankfull Width: 7 ft.
Wetted Width: 4 ft.
Water Velocity: 0.4 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 33.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4.4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6312 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.6312 tons/year
Erosion Information
Total Erosion at Crossing: 1.2625 tons/year
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Bittersweet Nightshade, Spotted Knapweed, Autumn Olive, Sweet Clover, Reed Canarygrass?