Road Stream Crossing Site AUS_OS090
Au Sable River Watershed, Lost Creek
Coupland Rd
Big Creek Twp,
Oscoda County
Information collected by:
Site Location
GPS Coordinates: 44.62356
, -84.20905
T26N
R02E
Sec 21,28
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 7.6314 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: 2
Structure Shape: Round
Inlet Type: Trash Rack
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
4.4 ft. |
44.5 ft. |
4.4 ft. |
Metal |
2 |
2 ft. |
45.7 ft. |
2 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 44.5 ft.
, Width 4.4 ft.
, Height 4.4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 2.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.54 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Additional Comments
Heavy rain day before and during survey
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 38 ft.
, Width 29.4 ft.
, Depth 4 ft.
Upstream Pond: Length 62 ft.
, Width 73.6 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 2 ft.
Bankfull Width: 12.5 ft.
Wetted Width: 8.8 ft.
Water Velocity: 1.29 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 24.3 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 0.3 ft.
Slope: More than 1:2
Downstream
Fill Depth: 0.2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.8157 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.8157 tons/year
Erosion Information
Total Erosion at Crossing: 7.6314 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Sediment and gravel from road maintenance
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Upstream Embankment |
4.2 ft. |
1.3 ft. |
0 ft. |
yes |
Sandy Loam |
0 |
Right Downstream Embankment |
4.5 ft. |
2.2 ft. |
0 ft. |
yes |
Sandy Loam |
0 |
Summary Information
Fish Passability 0.5
Fish Passage is an area of concern for this site.
Trash rack upstream on culvert #1 100% blocking flow. #2 culvert was underwater at time of inventory, blocked by some debris also to narrow to be effective at this site.
A future visit to this site is recommended. To check condition of culvert #2 and trash rack on culvert #1