Geography Action

“Geography Action Rivers 2002” is an educational outreach program of the National Geographic Society in partnership with The Coca-Cola Company and The Conservation Fund. Click here to explore a river system.The River source, also called the headwaters, is the beginning of a river. Often located in mountains, the source may be fed by an underground spring, or by runoff from rain, snowmelt, or glacial melt. Wetlands are low-lying areas saturated with water for long enough periods to support vegetation adapted to wet conditions. Wetlands help maintain river quality by filtering out pollutants and sediments, and by regulating nutrient flow.