This site offers information on many aspects of water, including text, pictures, data, maps, and an interactive center where users can offer opinions and test their water knowledge. Main topics include: water basics, Earth's water, water use, and special topics such as acid rain, saline water and other water-quality issues. Links to other water-related sites are also provided. Full description.

The National Marine Sanctuary Program identifies, designates and manages areas of the marine environment of special national significance due to their conservation, recreational, ecological, historical, research, educational, or aesthetic qualities. Access information and pictures of marine sanctuaries all over the U.S. and its territories. Discover ways to get involved with the sanctuary program, ... Full description.

This site provides an explanation for cloud formation and seeks to correct myths or misconceptions about how clouds form. Water vapor, condensation, and evaporation are discussed in the context of dew-point temperature and saturation. Educators and anyone explaining cloud formation will find hints on how to present the correct information and avoid misinforming their audiences. Full description.

Classroom activities based on how scientists study active volcanoes on the deep ocean floor. Activities include: locating an earthquake epicenter, recording geological and biological information during an ocean floor traverse, creating cross-section profiles of the ocean floor, and graphing seafloor data. Resources include videos and teacher guides. Full description.

As concerns over water resources and the environment grow, the importance of considering ground water and surface water as a single resource has become increasingly evident. The natural processes of groundwater-surface water interaction and human influences on this interaction are presented here, touching on natural ground-surface water interactions as part of the hydrologic cycle, chemical interactions, ... Full description.

This is a fact sheet on the water quality programs directly administered by the USGS. USGS provides information on issues such as the suitability of water for public supply and irrigation, aquatic ecosystem health, effects of agriculture and urbanization on water resources, acid rain, and disposal of radioactive waste. There are hot links to several studies and to data available from USGS and other ... Full description.

This site is a type of Clean Water Act for Kids. Tips for preventing non-point pollution tips are offered in the following areas: Anglers, Beach, Boaters, Drivers, Ecotourism, Endangered Species, Holiday and Gift giving, Home, Kitchen, Laundry and Cleaning, Lawn and Garden, Personal Watercraft, Recycling, Scuba Diving, Shore Visitors, Smokers, Students, and Water Conservation. The site is full of ... Full description.

The U.S. Department of the Interior, throught the Bureau of Reclamation, provides this website to assist Native Americas with water rights and policy information and support. The site provides a history of the program, news updates on policy issues, a listing of the programs and activities offered through NAAO, a library, and information on their water operations. The site also offers a site index, ... Full description.

This module provides background information on El Nino and the mechanisms of the Southern Oscillation. Relationships of El Nino to climate change, weather phenomena and disease carrying organizms are also presented. Full description.

This article describes how astronomers from the European Space Agency (ESA) have discovered thermal emission lines from interstellar water vapor using the spectrometers aboard ESA's Infrared Space Observatory (ISO). Full description.