1. Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July-August 2017 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2019 Resource Type: Map Access & Availability: Loading
2. Preliminary geologic map of the Lake Mead 30ʹ X 60ʹ quadrangle, Clark County, Nevada, and Mohave County, Arizona Author/Creator: Beard, Sue Publication/Creation: Flagstaff, Ariz. : U.S. Geological Survey, 2007 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading