Learn more about Rivers and Streams through this educational resource. This site features photographs, a description, fun facts, and more about this type of freshwater ecosystem.

The USGS explains the definition of a river and how a river is supplied with water. Included is a cross section of a river. Click Home to access the site in Spanish.

What makes our rivers and streams dirty? This brief overview discusses the causes of pollution in rivers and streams and how to solve it.

In this activity, students will measure stream velocity, sediment load, and the pH of the water.

Provides a diagram and a description of the movement of rivers and meandering patterns.

A detailed description of stream formation and the erosion process that occurs.

Did you know that the #1 pollutant in North Carolina is dirt? When soil is washed into streams and river, it smothers small animals and fish by clogging their gills. Look for bare patches of ground around your home and around your school...

Use this site to learn about the millions and trillions of gallons of water that covers the earth, known as the hydrosphere.

A reference page describing freshwater ecosystems, lakes, ponds, and rivers.