Editing Stream gradient (section)

==Hydrology and geology==
A high gradient indicates a steep slope and rapid [[volumetric flow rate|flow]] of [[water]] (i.e. more ability to erode); where as a low gradient indicates a more nearly level [[stream bed]] and sluggishly moving water, that may be able to carry only small amounts of very fine [[sediment]].  High gradient streams tend to have steep, narrow V-shaped [[valley]]s, and are referred to as young streams. Low gradient streams have wider and less rugged [[valley]]s, with a tendency for the stream to [[meander]]. Many rivers involve, to some extent, a flattening of the river gradient as approach the terminus at sea level.