Road Stream Crossing Site RIF_OG42

Rifle River Watershed, Prior Creek
Sage Lake Rd
Cumming Twp, Ogemaw County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.36342 , -84.08172
T23N R3E Sec 28
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 0.0706 tons/year
Severity: Moderate
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: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 50 ft. , Width 10.5 ft. , Height 6.9 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.8 ft.
Embedded Depth of Structure: 0.9 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0.8 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 35 ft. , Width 26 ft. , Depth 3.5 ft.
Upstream Pond: Length 22.5 ft. , Width 21.3 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 20.7 ft.
Wetted Width: 18.7 ft.
Water Velocity: 1.3 ft./sec. (Measured with Float Test)
Dominant Substrate: Cobble
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 21 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.7 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0347 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0347 tons/year
Erosion Information
Total Erosion at Crossing: 0.0706 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: upstreamside of culvert fixed with rock riprap
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Upstream
6.1 ft.
2.9 ft.
0.1 ft.
no
Gravel
0.0006
Left Upstream
5.6 ft.
10.2 ft.
0.1 ft.
no
Gravel
0.0006
Summary Information
Fish Passability 0.9