These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents 2012 water levels in the DVFS. Water level contours were developed using data from wells primarily measured in 2012 although earlier water level data in select wells were used in cases where no new data were available and water levels were not expected to have changed over time. Detailed information about the sites used to construct these contours is available in the larger work citation listed in this document.