Road Stream Crossing Site RIF_AR5
Rifle River Watershed, Mansfield Creek
Dobbler Rd
Clayton Twp,
Arenac County
Information collected by:
Site Location
GPS Coordinates: 44.15379
, -83.98743
T20N
R4E
Sec 9
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 3.5386 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: Cascade over Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: smooth
Structure is Rusted through
Dimensions of Structure: Length 41 ft.
, Width 5 ft.
, Height 5.4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0.8 ft.
Water Velocity*: 0.75 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 42 ft.
, Width 14.4 ft.
, Depth 2.1 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 10.2 ft.
Wetted Width: 8.9 ft.
Water Velocity: 0.2 ft./sec.
(Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Poor
Road Width at Culvert: 21 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.8 ft.
Slope: Vertical
Downstream
Fill Depth: 2 ft.
Slope: Vertical
Approaches
Left Approach
Length: 693 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.534
Erosion: 2.1407 tons/year
Right Approach
Length: 486 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.497
Erosion: 1.3979 tons/year
Erosion Information
Total Erosion at Crossing: 3.5386 tons/year
Extent of Erosion: Minor
Notes: erosion is on downstream side on top of pipe
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. rusted culvert,