Road Stream Crossing Site MAN_WE_092
Big Manistee River Watershed, Unknown (tributary to Silver Creek)
35 Rd
Colfax Twp,
Wexford County
Information collected by:
Site Location
GPS Coordinates: 44.40807
, -85.47944
T23N
R10W
Sec 11
Owned by Private
Structure is NOT Perched
Total Erosion: 4.3589 tons/year
Severity: Severe
Year Inventoried: 2014
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: Gravel
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 58 ft.
, Width 5 ft.
, Height 2.6 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 1.4 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 4.6 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 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: 0.8 ft.
Bankfull Width: 11 ft.
Wetted Width: 8.6 ft.
Water Velocity: 1 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 25 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 9.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 9.2 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 540 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.508
Erosion: 1.8893 tons/year
Right Approach
Length: 675 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.531
Erosion: 2.4697 tons/year
Erosion Information
Total Erosion at Crossing: 4.3589 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.