Program supporting investigations that are generally long-term and multi-disciplinary, and that integrate hydrological, geological, chemical, climatic, and biological information related to water resources issues.
Hydrologic monitoring data for Long Valley caldera, California, on springs, streams, wells, fumaroles, and precipitation to study the natural hydrologic variations and the response of the hydrologic system to volcanic and tectonic processes.
Overview of Klamath ecological research and links to USGS Klamath studies on ground water, nutrients, sediment oxygen demand, and fish response to water quality, sucker ecology, publications, bibliographies, and data.
Links to websites providing data and information related to Michigan hydrology including droughts, floods, current water conditions, Great Lakes water levels, climatology, and weather.
Main page for accessing links for information and data on the San Francisco Bay estuary and its watershed with links to highlights, water, biology, wetlands, hazards, digital maps, geologic mapping, winds, bathymetry and overview of the Bay.
Digital data sets describing the Arbuckle Simpson aquifer and surrounding areas in Carter, Coal, Johnston, Murray, and Ponotoc Counties in Oklahoma. The data are in shapefile format to create maps for many uses.
U.S. Department of the Interior |
U.S. Geological Survey