Road Stream Crossing Site AUS_OS146
Au Sable River Watershed, Cherry Creek
Helmer Lake Rd
Elmer Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.73897
, -84.17197
T27N
R02E
Sec 10,15
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 1.3918 tons/year
Severity: Moderate
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: 2
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
2.6 ft. |
26.3 ft. |
2.6 ft. |
Metal |
2 |
2.6 ft. |
25.3 ft. |
2.6 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 26.3 ft.
, Width 2.6 ft.
, Height 2.6 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 6 ft.
, Width 5.5 ft.
, Depth 0.8 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 9.5 ft.
Wetted Width: 3 ft.
Water Velocity: 0.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Sand
County Road
Road Condition: Fair
Road Width at Culvert: 20.3 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 3 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.6 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 320.5 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.464
Erosion: 0.8318 tons/year
Right Approach
Length: 229.7 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.436
Erosion: 0.56 tons/year
Erosion Information
Total Erosion at Crossing: 1.3918 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Autumn Olive, Spotted Knapweed