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.

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.

This archive of climatic data houses both national and global datasets as part of the National Climatic Data Center's (NCDC) mission to describe the climate of the United States and to maintain records regarding trends and anomalies of weather and climate. Users may search the archive by data type, national or global coverage, and time period; or by resource type, such as satellite, radar, models, ... Full description.

This site offers access to real-time oceanographic and surface meteorological data from the TAO array of over 400 buoys in 70 moorings in the tropical Pacific Ocean. TAO datasets are typically used for monitoring and prediction of El Nino/La Nina events. At the data delivery page, users can select all or any combination of buoys, display type, data type(s), and time period. Other materials include ... Full description.

At this site, users can access and compare data from a large selection of spacecraft, instruments, and ground-based facilities. Most data is related to studies of solar wind, other particle emissions, and Earth's magnetic field. Full description.

Visitors to this site can access general information about earthquakes, such as frequently asked questions, seismic hazards, and building code information. Real-time information on specific events in western Canada is available in the form of maps and lists, and is updated hourly. For teachers, there is a set of links to background materials, computer and classroom activities, and seismic data. A ... Full description.

Users can access a selection of technical information and data about earthquakes in the U.S. and around the world. A current worldwide list of earthquakes is available, as are data on geophysical solutions, a catalog search, an automatic data request function, mining seismicity information, and a registry of seismograph stations. Full description.

This resource offers access to a variety of materials, including general information about COOL, a photo gallery, press releases, talks and papers, and research projects. There are links to archived and real-time ocean data (sea surface temperature, surface currents and waves, autonomous glider data), and an "underwater weather forecast". Full description.

This site consists of a digital total sediment thickness map and database for the world's oceans and marginal seas. The data are derived from previously published maps, ocean drilling results (Ocean Drilling Program and Deep Sea Drilling Project), and seismic reflection profiles (National Geophysical Data Center archives and Geological/Geophysical Atlas of the Pacific). Features include a JPEG image ... Full description.

This document explores the physical and chemical component of the Maryland Chesapeake Bay Water Quality Monitoring Program. Users can study how this program emphasizes water quality as a function of nutrient levels, dissolved oxygen, and water clarity. An interactive map allows the user to select a river basin and view status and trends for analyzed water quality parameters. Full description.