Fitness of subsurface water for use based on its composition and properties.
Groundwater quality in the Southern Sierra Nevada, California [ More info] Recent study indicating inorganic constituents as the primary items of concern in this area. Chemical and mineralogical compositions of the aquifer rocks probably explain variation among localities here.
Groundwater quality in the Tahoe and Martis Basins, California [ More info] Recent study encountered occasional high values of radioactive trace elements, but the water quality in this area as monitored compares favorably to more urban areas studied by the same group.
Groundwater quality in the Upper Santa Ana Watershed study unit, California [ More info] Recent study indicating nitrate and perchlorate are the primary inorganic constituents of interest here, coming from human activities such as agriculture.
Groundwater quality in the north San Francisco Bay groundwater basins, California [ More info] Summary of chemical constituents of ground water that are of concern to human activity in this area. Arsenic is the constituent that occurs most frequently in high concentrations.
Groundwater quality of southeastern Wyoming [ More info] Explains how we assess groundwater quality here, what characteristics are important, and how they hurt or, in some cases, help use use the water.
Groundwater resources of Mosteiros basin, island of Fogo, Cape Verde, west Africa [ More info] Shallow groundwater has good quality, but salinity measured in wells suggests the thin lens of freshwater under the coastal plain will be vulnerable to saltwater intrusion as a consequence of pumping.
Johnson Creek basin hydrologic monitoring [ More info] Hydrologic data and analyses of surface-water, water quality, and ground water in the Johnson Creek basin in Oregon.
Monitoring for Pesticides in Groundwater and Surface Water in Nevada, 2008 [ More info] Study of pesticides in shallow groundwater and surface water to help decision makers evaluate and manage pesticide application practices to protect drinking water resources, especially deeper, potable groundwater as well as aquatic species.
National analysis of trace elements in ground water, streams, stream and reservoir sediment, and fish and clam tissue across the United States [ More info] Trace elements are inorganic chemicals occurring in small amounts in nature. This web site of the National Water Quality Assessment links to U.S. data, publications, news, and other sites on trace metals, metalloids and radionuclides in water.
Nevada Water Science Center Projects [ More info] Links to detailed descriptions of USGS water-related research projects in Nevada with project information, location maps, and bibliographies including online reports.
Alphabetical Index of Topics
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