Road Stream Crossing Site AUS_OT115
Au Sable River Watershed, Tributary of Chub Creek
Marlette Rd
Otsego Lake Twp,
Otsego County
Information collected by:
Site Location
GPS Coordinates: 44.87509
, -84.60769
T29N
R03W
Sec 25
Owned by Private
Fish Passability 0.5
Total Erosion: 3.5881 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: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 65 ft.
, Width 2 ft.
, Height 2 ft.
Percentage Plugged:
Inlet: 1% to 25%
Structure Inlet
Water Depth: 1.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.595 ft./sec.
Structure Outlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.752 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 15 ft.
, Width 16 ft.
, Depth 3.3 ft.
Upstream Pond: Length 14 ft.
, Width 45 ft.
, Depth 2.2 ft.
Riffle Information
Water Depth: 14.5 ft.
Bankfull Width: 23 ft.
Wetted Width: 0.5 ft.
Water Velocity: 0.893 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 34 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.9 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 2.3041 tons/year
Right Approach
Length: 643 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.777
Erosion: 1.2839 tons/year
Erosion Information
Total Erosion at Crossing: 3.5881 tons/year
Extent of Erosion: Minor
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. Eventually replace with a new culvert without a trash rack
These non-native species were observerd at this site: Leafy Spurge