Road Stream Crossing Site AUS_OS182
Au Sable River Watershed, Tributary of Robins Creek
Caldwell Rd
Comins Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.71719
, -84.11166
T27N
R03E
Sec 19,20
Owned by Private
Fish Passability 0
Perch Height: 1.3 ft.
Total Erosion: 0.0004 tons/year
Severity: Severe
Year Inventoried: 2012
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: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 46.2 ft.
, Width 2.5 ft.
, Height 2.5 ft.
Perch Height: 1.3 ft.
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 6 ft.
, Width 3.8 ft.
, Depth 0.9 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 3 ft.
Wetted Width: 1 ft.
Water Velocity: 0.5 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 26.7 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 0.2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.0004 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Downtream Ditch |
3.8 ft. |
1.7 ft. |
0.1 ft. |
no |
Sand |
0.0004 |
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Yes, the outlet is perched and has formed a small scour pool, posing a barrier to fish passage.
A future visit to this site is recommended. The outlet is perched and has formed a small scour pool, posing a barrier to fish passage.
These non-native species were observerd at this site: Autumn Olive