NEHRP Clearinghouse
- Title
- Analysis of Ground-Water Levels and Associated Trends in Yucca Flat, Nevada Test Site, Nye County, Nevada, 1951-2003.
- File
- PB2006102183.pdf
- Author(s)
- Fenelon, J. M.
- Source
- January 2005, 102 p.
- Identifying Number(s)
- USGS/SIR-2005-5175
- Abstract
- Almost 4,000 water-level measurements in 216 wells in the Yucca Flat area from 1951 to 2003 were quality assured and analyzed. An interpretative database was developed that describes water-level conditions for each water level measured in Yucca Flat. Multiple attributes were assigned to each water-level measurement in the database to describe the hydrologic conditions at the time of measurement. General quality, temporal variability, regional significance, and hydrologic conditions are attributed for each water-level measurement. The database also includes narratives that discuss the water-level history of each well.Water levels in 34 wells were analyzed for variability and for statistically significant trends. An attempt was made to identify the cause of many of the water-level fluctuations or trends. Potential causes include equilibration following well construction or development, pumping in the monitoring well, withdrawals from a nearby supply well, recharge from precipitation, earthquakes, underground nuclear tests, land subsidence, barometric pressure, and Earth tides.
- Keywords
- ; Seasonal variations; Water wells; Nevada; Yucca Flat; California; Hydrogeology; Water levels; Ground water; Infiltration galleries; Monitoring; Surface water; Trends; Water resources; Aquifers; Discharge (Water); Water chemistry; Evapotranspiration