During spring 2016, the U.S. Geological Survey and other agencies made water-level measurements in the Mojave River and Morongo groundwater basins. These data document recent conditions and, when compared with previous data, changes in groundwater levels. A water-level contour map was drawn using data from about 646 wells, providing coverage for most of the basins. In addition, a water-level-change map was compiled to compare the 2016 water levels to the 2014 water levels throughout the basins. Approximately 122 water levels provided by cooperating agencies are used to construct the water-level contours and water-level-change map. These water levels do not meet the U.S. Geological Survey standards for storage in the National Water Information System database. Those records are presented in this data release.