Road Stream Crossing Site MAN_CR_005

Big Manistee River Watershed, Portage Creek
Euclid Ave
Grayling Twp, Crawford County
Information collected by:
Site Location
GPS Coordinates: 44.66014 , -84.81927
T26N R4W Sec 8
Owned by State
Structure is NOT Perched
Total Erosion: 0.728 tons/year
Severity: Moderate
Year Inventoried: 2014
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: Apron
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 50 ft. , Width 6 ft. , Height 4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 2.8 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 2.8 ft./sec.
*Water Velocities were measured 2 ft. below Surface (with Meter)
Stream Information
Stream Flow: 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: 3.2 ft.
Bankfull Width: 30 ft.
Wetted Width: 20 ft.
Water Velocity: 1.7 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 27 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 1.4 ft.
Slope: More than 1:2
Fill Depth: 2 ft.
Slope: More than 1:2
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 225 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.435
Erosion: 0.728 tons/year
Erosion Information
Total Erosion at Crossing: 0.728 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.