Road Stream Crossing Site AUS_IS027
Au Sable River Watershed, Stewart Creek
Curtisville Rd
Plainfield Twp,
Iosco County
Information collected by:
Site Location
GPS Coordinates: 44.50594
, -83.80334
T24N
R05E
Sec 2
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 0.5682 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: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 70.9 ft.
, Width 8 ft.
, Height 6.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 2.7 ft./sec.
Structure Outlet
Water Depth: 1.4 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 3.3 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
Rocks are built up in front of the outlet. Some water was falling over the rocks into the pool.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 338.2 ft.
Wetted Width: 15.1 ft.
Water Velocity: 2.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 23.4 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 3.4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4409 tons/year
Right Approach
Length: 350.1 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.47
Erosion: 0.1273 tons/year
Erosion Information
Total Erosion at Crossing: 0.5682 tons/year
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Rocks at outlet are causing a fish passage barrier.
A future visit to this site is recommended. To evaluate the barrier at the outlet.
These non-native species were observerd at this site: Autumn Olive, Spotted Knapweed, Sweet Clover