Collecting pieces or specimens or making measurements or observations at determined intervals or areas. Results may be used as representative of the whole research area or population.
Wyoming groundwater-quality monitoring network [ More info] Shows high-priority areas where groundwater will be monitored, outlines the methods of collection and analysis that will be used.
Yakima River Basin [ More info] Description of the studies of the ground water system in the Yakima River Basin and how it interacts with rivers and streams in the basin. Includes links to project status, datasets, maps, project summaries, news releases and bibliographies.
usSEABED (marine sediment and rock distribution) [ More info] Data on sediment and rock distributions in the waters off the United States, shown using an internet map service with links to downloadable data files
Alphabetical Index of Topics
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