Water levels in periodically measured wells in the Yucca Mountain area, Nevada, 1981--1987

This report presents water-level data for 28 wells that have been periodically measured in the Yucca Mountain area, Nevada. The report includes discussions of the methods used and corrections applied to obtain water-level depths and altitudes from onsite measurements. Water levels for each well are presented in tabular and graphical (hydrograph) form. The altitude of the water level in the upper part of the saturated zone is about 775 meters above sea level to the west of and along part of the crest of Yucca Mountain; along the eastern edge and southern end of Yucca Mountain, the water level is nearly horizontal and is 728 to 730 meters above sea level. The water-level data were obtained in cooperation with the US Department of Energy to help evaluate the suitability of the area for storing high-level nuclear waste. 38 refs., 3 figs., 2 tabs