This data set consists of digital water-table contours for the Mojave River and the Morongo Ground-Water Basins. The U.S. Geological Survey constructed a water-table map of the Mojave River and the Morongo Ground-Water Basins for ground-water levels measured during the spring of 1998. Water-level data were collected from 418 wells to construct the contours. The water-table contours were digitized from the paper map which was published at a scale of 1:175,512. The contour interval rangs from 3,400 to 1,500 feet above sea level.