Road Stream Crossing Site MAN_KA_039

Big Manistee River Watershed, North Branch Manistee River
N Sharon Rd
Garfield Twp, Kalkaska County
Information collected by:
Site Location
GPS Coordinates: 44.5897 , -85.07675
T25N R6W Sec 6
Owned by Private
Structure is NOT Perched
Total Erosion: 0.4596 tons/year
Severity: Restored
Year Inventoried: 2014
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Other
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Rock
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 32 ft. , Width 35 ft. , Height 11 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.7 ft./sec.
Structure Outlet
Water Depth: 3.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
*Water Velocities were measured 2.4 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 110 ft. , Width 120 ft. , Depth 4.5 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 2 ft.
Bankfull Width: 20 ft.
Wetted Width: 14 ft.
Water Velocity: 3.5 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 29 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 390 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.478
Erosion: 0.1787 tons/year
Right Approach
Length: 570 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.514
Erosion: 0.2809 tons/year
Erosion Information
Total Erosion at Crossing: 0.4596 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.