Road Stream Crossing Site AUS_CR073

Au Sable River Watershed, Thayer Creek
Mason Track Trail
South Branch Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.56877 , -84.50784
T25N R02W Sec 13
Owned by State
Fish Passability 0
Perch Height: 0.2 ft.
Total Erosion: 2.5831 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Trash Rack
Outlet Type: Cascade over Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 19.8 ft. , Width 2 ft. , Height 2 ft.
Percentage Plugged: Inlet: 1% to 25% Outlet: 0% In Pipe: 0%
Percentage Crushed: Inlet: 0% Outlet: 0% In Pipe: 1% to 25%
Perch Height: 0.2 ft.
Structure Inlet
Water Depth: 0.2 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 Float Test)
Stream Information
Stream Flow: None
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 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 12 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0.8 ft.
Slope: More than 1:2
Fill Depth: 1 ft.
Slope: More than 1:2
Left Approach
Length: 231 ft.
Slope: More Than 10%
Vegetation: Heavy
LS Factor: 3.185
Erosion: 2.432 tons/year
Right Approach
Length: 118 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.387
Erosion: 0.151 tons/year
Erosion Information
Total Erosion at Crossing: 2.5831 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site. Flow is halted at culvert
A future visit to this site is recommended. Address realignment issues to allow flow passage
These non-native species were observerd at this site: Spotted Knapweed