Streams and rivers consisting of
relatively swift flowing waters are called lotic systems. Sometimes streams and rivers are classified
by their size. The smallest streams with a year round flow
and no tributaries are called first order (1) streams. When
two first order streams flow into each other they form a second
order stream (2). If two second order streams flow into each
other they form a third order stream (3), and so on.
In the picture to the right, do you know what
# 4 would be? Number four represents a river. The word
river and stream are going to be used as synonyms throughout
the rest of this exercise.
River and Stream Classification