Road Stream Crossing Site RIF_OG41

Rifle River Watershed, Rifle River (main stream)
Sage Lake Rd
Cumming Twp, Ogemaw County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.36369 , -84.04828
T23N R3E Sec 27
Fish Passability 0.5
Total Erosion: 0.0698 tons/year
Severity: Moderate
Year Inventoried: 2012
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Square/Rectangle
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Rock
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 42 ft. , Width 74 ft. , Height 7.4 ft.
Structure Inlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0.8 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 2.5 ft.
Embedded Depth of Structure: 0.8 ft.
Water Velocity*: 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 45 ft. , Width 52 ft. , Depth 2.1 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 1.7 ft.
Bankfull Width: 52 ft.
Wetted Width: 45 ft.
Water Velocity: 2.4 ft./sec. (Measured with Float Test)
Dominant Substrate: Cobble
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3 ft.
Slope: Vertical
Downstream
Fill Depth: 3 ft.
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0331 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0331 tons/year
Erosion Information
Total Erosion at Crossing: 0.0698 tons/year
Extent of Erosion: Minor
Notes: foot path leading to stream
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Downstream
17 ft.
2.5 ft.
0.2 ft.
yes
Sand
0.0037
Summary Information
Fish Passability 0.5