1. Ground-water levels in the Columbia River basalt and overlying materials, Spring 1983, southeastern Washington state Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
2. Ground-water levels spring 1985, and ground-water level changes spring 1983 to spring 1985, in three basalt units underlying the Columbia Plateau, Washington and Oregon Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Tacoma, Washington : Department of the Interior, United States Geological Survey, 1989 Resource Type: Map Access & Availability: Loading