Regolith-thickness contours for the shallow groundwater system in the Lower Gunnison River Basin, Colorado

This dataset consists of isopach contours showing the generalized thickness of regolith sediments (alluvium, colluvium, and weathered bedrock) overlying well-consolidated bedrock in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Regolith thickness was contoured manually on the basis of regolith-thickness values in the point dataset geologic_data. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.