US Geological Survey
U.s. Geological Survey: Water Science for Schools
A collection of resources--pictures, maps, data, glossary--about water and the water cycle.
US Geological Survey
Usgs: Water Science Glossary of Terms
The United States Geological Survey offers a complete look at water science in glossary form. Take advantage of the topic guides at the top of the site. You'll find great maps, clipart and activities centers. Click Home to access the...