Shape of a River - Geomorphology
Stream classification (pg
2 of 2)
Suppose we imagine a low gradient prairie stream
and increase the amount of water that flows through
the stream on a regular basis. Because we know that
width and depth are related to discharge, we can
predict that the stream will become either wider
and shallower, or will become narrower and deeper,
depending on the substrate and bank vegetation.
Meandering pattern is related to the bankfull
width. With increased discharge we can predict an
increase in meander radius and meander length. The
result is a progressive increase in bank erosion
that results in additional sediment, with
potentially costly consequences.