Watersheds are those land areas that catch rain or snow and drain to specific marshes, streams, rivers, lakes, or to ground water. This site allows users to locate their watershed by city, county, state, or region. Links provide information about stream flow, water use, conservation efforts, demographics, forest riparian habitats, science in your watershed, water discharges, and assessment of watershed ... Full description.

Users can select a variety of materials on El Nino/La Nina. Materials presented here include bibliographies, news articles, technical and research information, movies, animations, and cartoons. Full description.

This portal provides links to an extensive list of volcano-related websites for the United States and around the world. Users can access articles, maps, glossaries, webcams, a dictionary of volcanoes, and many other resources. Full description.

Visitors to this portal can find links to a large selection of media outlets. The outlets include television networks, individual TV programs, broadcast news organizations, newpapers, magazines, and others for the United States and around the world. Themes in this list cover environmental and conservation issues. Full description.

Users of this portal can access information on mountains, islands, and other landforms of the Earth. Links are provided to a variety of materials, including books, maps, atlases, photographs and imagery, games and quizzes. Full description.

Users can access an extensive selection of Earth Science materials. The institute itself sponsors a series of online exhibits on volcanoes and earthquakes, drinking water, El Nino/La Nina, rockhounding, and petroleum. An extensive selection of links to other resources is also provided. These include geology, geophysics, rocks and minerals, ecosystems, and a set of teacher resources for Earth Science. ... Full description.

This is the National Oceanic and Atmospheric Administration's hurricane website. Features include weather watches, warnings, and forecasts. Also included are links to other NOAA sites, preparedness guides, imagery, and information on the Saffir-Simpson scale. Full description.

Visitors to this site can choose from a set of links to materials on basic astrophysics, cosmic radiation, features and behavior of the sun, and space weather. An "Ask Us" feature, a glossary, and a selection of links to related sites are included. Full description.

Users can access an extensive array of information on coral reefs. Materials presented here include information on reefs in 131 countries, maps and photos, data on coral bleaching, an online mapping system, a bibliography of reef-related references, and downloadable datasets. Full description.