As part of this data collection program, the USGS is tasked to maintain several onsite and offsite well networks for which water levels are measured intermittently or continually in selected wells and test holes. Data collected from these monitoring networks are made available quarterly as a preliminary data release to provide the information on a timely basis. The USGS also uses pressure sensors to measure water levels at selected locations.
Pressure sensors provide a more continual representation of water-level fluctuations.
Continual water-level data collected on the NTS are graphed and shown for the sites listed below. All data available for the calendar year have been included on each graph. As an additional part of the data collection program, the USGS compiles water production reports supplied by Bechtel Nevada. Available production data from major water wells are compiled and used to estimate daily withdrawal rates. Monthly withdrawals, calculated from the daily rates, are tabulated for the quarter and, at the end of quarter four, for the year.