The Hydrologic Cycle: Online Meteorology Guide Web site is maintained by the Department of Atmospheric Sciences of the University of Illinois at Urbana-Champaign. The guide describes the various aspects of the hydrologic...

USGS summary of the water cycle complete with diagrams, pictures and text. This is an excellent resource from the Geological Survey, that is great for students and can be included in the classroom along with lessons.

The Baylor University College of Medicine continues to work at a furious pace on their delightful BioEd Online site, and educators everywhere love them for their work and dedication. Recently, they placed this lesson on...

This list of questions and answers about water covers a variety of categories, including water use in the United States, water use in the home, data and measurements, chemistry, and others. Links to additional...

This portal provides access to a large selection of real-time and archived data on stream flow and water quality for surface and groundwater. Links are provided to the National Water Information System Web Interface...