Road Stream Crossing Site MAN_OT_001
Big Manistee River Watershed, Manistee River
C-38 Mancelona Rd
Hayes Twp,
Otsego County
Information collected by:
Site Location
GPS Coordinates: 44.90136
, -84.84511
T30N
R4W
Sec 18
Owned by State
Structure is NOT Perched
Total Erosion: 2.2304 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: Ellipse
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 10 ft.
, Width 6.3 ft.
, Height 4.3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 4.6 ft./sec.
Structure Outlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 6.4 ft./sec.
*Water Velocities were measured 0.9 ft. below Surface
(with Meter)
Stream Information
Stream Flow: More than Bankfull
Scour Pool: Length 30 ft.
, Width 60 ft.
, Depth 3.5 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 2 ft.
Bankfull Width: 35 ft.
Wetted Width: 35 ft.
Water Velocity: 1.5 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 50 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 7.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 7.8 ft.
Slope: 1:2
Approaches
Left Approach
Length: 750 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.733
Erosion: 0.9081 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.8
Erosion: 1.3223 tons/year
Erosion Information
Total Erosion at Crossing: 2.2304 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.