Road Stream Crossing Site AUS_PR091

Au Sable River Watershed, Surface Drain
Cruzen Rd
Mikado Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.56067 , -83.46262
T25N R08E Sec 15,16
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 0.9395 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: 1
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 48 ft. , Width 4.5 ft. , Height 4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0.6 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Additional Comments
There is standing water by the culvert only-no stream flow and no riffle.
Stream Information
Stream Flow: None
Scour Pool: Length 7 ft. , Width 9 ft. , Depth 0.4 ft.
Upstream Pond: Length 10 ft. , Width 7.4 ft. , Depth 0.5 ft.
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 0 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.6 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4145 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4145 tons/year
Erosion Information
Total Erosion at Crossing: 0.9395 tons/year
Extent of Erosion: Moderate
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)
Left Downstream Embankment
9 ft.
1 ft.
1.4 ft.
yes
Sand
0.097
Left Downstream Embankment
4.8 ft.
1.1 ft.
0.4 ft.
yes
Gravel
0.0134
Summary Information
Fish Passability 0.9
Erosion is an area of concern for this site. There is some moderately bad erosion on the downstream embankment which is reaching the water, as well as a scour pool and an upstream pond.
A future visit to this site is recommended. To evaluate the erosion and see if there is a stream when more water is present.
These non-native species were observerd at this site: Reed Canarygrass?, Spotted Knapweed, Bittersweet Nightshade