Low, concentric ridges and swales on a floodplain, marking the
successive positions of former meander loops.
The amplitude of a fully developed meander measured from
midstream to midstream.
A stream having a sinuosity greater than some arbitrary value.
The term also implies a moderate degree of pattern symmetry,
imparted by regularity of size and repetition of meander loops.
The channel generally exhibits a characteristic process of bank
erosion and point bar deposition associated with systematically
The particle diameter of the 50th percentile point on a size
distribution curve such that half of the particles (by weight,
number, or volume) are larger and half are smaller (D50.)
A bar lacking permanent vegetal cover that divides the flow in a
channel at normal stage.
The portion of a streambank having an elevation approximately
the same as that of the mean water level of the stream.
Change in position of a channel by lateral erosion of one bank
and simultaneous accretion of the opposite bank.
A soft, saturated mixture mainly of silt and clay.
A low ridge that slopes gently away from the channel banks
that is formed along streambanks during floods by deposition.
Equivalent spherical diameter of a hypothetical sphere of the
same volume as a given sediment particle.
A channel whose boundary is in bedrock or non-erodible
The water stage prevailing during the greater part of the year.
Water movement that overtops the bank either due to stream
stage or to overland surface water runoff.
The abandoned former meander loop that remains after a
stream cuts a new, shorter channel across the narrow neck of
a meander. Often bow-shaped or horseshoe-shaped.
Streambank surface covering, usually impermeable, designed
to serve as protection against erosion. Common pavements
used on streambanks are concrete, compacted asphalt, and