Road Stream Crossing Site AUS_OS148
Au Sable River Watershed, Cherry Creek
Gerber Rd
Elmer Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.7226
, -84.15079
T27N
R02E
Sec 23,24
Owned by Private
Fish Passability 0
Perch Height: 0.7 ft.
Total Erosion: 17.5971 tons/year
Severity: Severe
Year Inventoried: 2013
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: Trash Rack
Outlet Type: Other
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 67 ft.
, Width 3 ft.
, Height 3 ft.
Percentage Crushed:
Inlet: 1% to 25%
Outlet: 1% to 25%
In Pipe: 0%
Perch Height: 0.7 ft.
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.6 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 31 ft.
, Width 21 ft.
, Depth 2.9 ft.
Upstream Pond: Length 7 ft.
, Width 7.7 ft.
, Depth 0.8 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 9.5 ft.
Wetted Width: 6.5 ft.
Water Velocity: 1.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 30 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 7.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 7 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 243.2 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.439
Erosion: 0.8816 tons/year
Right Approach
Length: 990 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.043
Erosion: 16.7155 tons/year
Erosion Information
Total Erosion at Crossing: 17.5971 tons/year
Summary Information
Fish Passability 0
Erosion is an area of concern for this site.
The culvert is in very poor condition. There is a large upstream pond and scour pool. Also there are fish passage barriers.
A future visit to this site is recommended. There are fish passage barriers and an upstream pond and scour pool caused by erosion.
These non-native species were observerd at this site: Spotted Knapweed, Sweet Clover, queen Anne's lace