Depth in a well or aquifer at which groundwater occurs.
Ground-water data for the Nation [ More info] National Water Information System (NWIS) real-time data on selected ground water sites, ground water level data, site inventory of wells, test holes, drains, springs and excavations and ground water-quality data for the United States.
Ground-water recharge in the arid and semiarid southwestern United States [ More info] A systematic presentation of climatic and hydrogeologic framework of the area, regional analysis of ground-water recharge, and an overview of 8 site-specific case studies.
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.
Groundwater Resources of Ribeira Faja Basin, Island of Sao Nicolau, Cape Verde, West Africa [ More info] Lower precipitation and recharge, with deeper groundwater levels, suggest this basin will be less susceptible to contamination than others nearby, but may be susceptible to saltwater intrusion brought on by well pumping.
Groundwater Resources of Ribeira Paul Basin, Island of Santo Antao, Cape Verde, West Africa [ More info]
Quantifying effects of climate change on the snowmelt-dominated groundwater resources of northern New England [ More info] Planned analysis of the sensitivity of groundwater levels to changes in air temperature and precipitation. Changes in groundwater recharge and discharge also will be correlated with other hydrologic indicators.
USGS Ground-Water Networks [ More info] Maps of three ground-water monitoring networks that group related wells and data from active well networks, and provide basic statistics about the water-level data collected by USGS.
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.
Ground water climate response network [ More info] Map showing a network of selected ground water wells in the U.S. The water levels in these wells are used to monitor the effects of droughts and other climate variability.
Land subsidence and aquifer-system compaction in the Tucson Active Management Area, south-central Arizona, 1987-2005 [ More info] Results of ground-surface monitoring and borehole water table measurements document subsidence of the land surface correlative with changes in the ground water.
Alphabetical Index of Topics
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