Road Stream Crossing Site CLHW_BC-014

Big Creek Watershed, Unnamed Drainage of Big Creek
Main Street Rd
Mason Twp, Arenac County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.113 , -83.84766
T20N R5E Sec 22
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.435 tons/year
Severity: Moderate
Year Inventoried: 2016
Site ID
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: Headwall
Outlet Type: Cascade over Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 49 ft. , Width 4 ft. , Height 4.1 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
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: 0.4 ft.
Bankfull Width: 8 ft.
Wetted Width: 6.5 ft.
Water Velocity: 0.5 ft./sec. (Measured with Float Test)
Dominant Substrate: Cobble
Road Information
Paved County Road
Road Condition: Poor
Road Width at Culvert: 19 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.2 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.358 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: 0.435 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Replace rip rap to prevent more erosion from occuring
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Downstream Embankment
2.5 ft.
3 ft.
4 ft.
yes
Sand
0.077
Summary Information
Fish Passability 0.5
These non-native species were observerd at this site: Spotted Knapweed