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.
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.
U.S. Department of the Interior |
U.S. Geological Survey