Road Stream Crossing Site AUS_OT118
Au Sable River Watershed, North Branch Au Sable River
Bent Tree Dr
Bagley Twp,
Otsego County
Information collected by:
Site Location
GPS Coordinates: 44.94083
, -84.62799
T29N
R03W
Sec 2
Owned by Private
Fish Passability 0.9
Total Erosion: 0.4781 tons/year
Severity: Moderate
Year Inventoried: 2013
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Sand
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 35 ft.
, Width 20 ft.
, Height 3.7 ft.
Structure Inlet
Water Depth: 0.8 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 0.9 ft.
Water Velocity*: 0.451 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 24 ft.
Wetted Width: 16 ft.
Water Velocity: 0.635 ft./sec.
(Measured with Float Test)
Dominant Substrate: Silt
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 21.5 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4051 tons/year
Right Approach
Length: 235 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.437
Erosion: 0.073 tons/year
Erosion Information
Total Erosion at Crossing: 0.4781 tons/year
Extent of Erosion: Minor
Notes: Along banks/ minor erosion
Summary Information
Fish Passability 0.9
A future visit to this site is recommended. Invasives and to see if erosion is being kept in check
These non-native species were observerd at this site: Leafy Spurge, Spotted Knapweed, Reed Canarygrass