Road Stream Crossing Site AUS_PR097

Au Sable River Watershed, Grey Creek
London Rd
Mikado Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.54131 , -83.48251
T25N R08E Sec 20
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 0.5985 tons/year
Severity: Severe
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: Round
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 50 ft. , Width 4.5 ft. , Height 4.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments
No water is moving through the culvert. There is water in front of the outlet, but it isn't deep enough to reach into the pipe.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Upstream Pond: Length 26 ft. , Width 10 ft. , Depth 1.4 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 2.7 ft.
Wetted Width: 1.3 ft.
Water Velocity: 0 ft./sec. (Measured with Meter)
Dominant Substrate: Silt
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 23.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 415 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.483
Erosion: 0.1557 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4428 tons/year
Erosion Information
Total Erosion at Crossing: 0.5985 tons/year
Summary Information
Fish Passability 0
A future visit to this site is recommended. To see if water flows through the cuvert at other times of the year, and to evaluate how it functions when there is more water in it.
These non-native species were observerd at this site: Reed Canarygrass?, , Bittersweet Nightshade, Spotted Knapweed