PREVIOUS

River and Stream Classification

NEXT

Michigan Environmental Education Curriculum
River and Stream Ecosystems

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

River and Stream Classification

Start > Title > Site Map > Credits > Glossary > Help
Michigan Tech > Tech Alive > Series Index > Michigan Environmental Education Curriculum > Module Index > Ecosystems