Road Stream Crossing Site RIF_AR17

Rifle River Watershed, South Branch Townline Creek
Knight Rd
Clayton Twp, Arenac County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.0983 , -83.95539
T20N R4E Sec 35
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 2.7711 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: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 56 ft. , Width 3.3 ft. , Height 3.1 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 40 ft. , Width 40 ft. , Depth 2 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 6.8 ft.
Wetted Width: 5.7 ft.
Water Velocity: 0.5 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 22 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 339 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.468
Erosion: 0.9611 tons/year
Right Approach
Length: 579 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.516
Erosion: 1.81 tons/year
Erosion Information
Total Erosion at Crossing: 2.7711 tons/year
Extent of Erosion: Stabilized
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: riprap installed
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. invsasive species
These non-native species were observerd at this site: Purple Loosestrife