Road Stream Crossing Site AUS_RO017

Au Sable River Watershed, Tributary of South Branch Au Sable River
Moore Rd
Higgins Twp, roscommon County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.425621 , -84.4817
T24N R01W Sec 31
Owned by State
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 6.438 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 35 ft. , Width 1.2 ft. , Height 0.8 ft.
Structure is NOT Perched
Water Depth: 0 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
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 8 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec. (Measured with Float Test)
Dominant Substrate: Organics
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 20.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.3 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.219 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.219 tons/year
Erosion Information
Total Erosion at Crossing: 6.438 tons/year
Extent of Erosion: Minor
Notes: Normal
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. To fix culvert, plugged and crushed.