Embankment skew angle - Right Overbank
The angle measured from the flow direction to the centerline of the right approach roadway, in degrees. The embankment angle is used to
account for the effect of the orientation of the embankment on the contracting approach flow. For an abutment angled downstream, the scour
depth is decreased; for an abutment angled upstream, the scour depth is increased. Please note that the embankment skew angle may be different
from the abutment skew angle.