Road Stream Crossing Site AUS_PR134

Au Sable River Watershed, Tributary of Backus Creek
M-72
Millen Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.65528 , -83.53733
T26N R07E Sec 12,13
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.0595 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: Round
Inlet Type: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: None
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 124 ft. , Width 5 ft. , Height 5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.6 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments
There is cement coming off in places near the outlet.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Upstream Pond: Length 5.5 ft. , Width 7 ft. , Depth 0.2 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 5 ft.
Wetted Width: 3.1 ft.
Water Velocity: 1 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved State Road
Road Condition: Good
Road Width at Culvert: 36 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 10 ft.
Slope: 1:2
Downstream
Fill Depth: 8 ft.
Slope: 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: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0595 tons/year
Erosion Information
Total Erosion at Crossing: 0.0595 tons/year
Summary Information
Fish Passability 0.5
Fish Passage is an area of concern for this site. The culvert is longer than 100 feet and is speeding up the water a lot. An upstream pond is forming.
A future visit to this site is recommended. To evaluate length of the culvert and speed of stream through the culvert. To check on if an upstream pond starts forming.
These non-native species were observerd at this site: Autumn Olive, Spotted Knapweed, Sweet Clover