1. Hydraulic conductivity, specific yield, and pumpage--High Plains Aquifer system, Nebraska 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. Hydrogeologic and water-quality characteristics of the Prairie du Chien-Jordan aquifer, southeast Minnesota Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: St. Paul, Minnesota : United States Department of the Interior, Geological Survey, 1983 Resource Type: Map Access & Availability: Loading
3. Hydrogeologic and water-quality characteristics of the St. Peter aquifer, southeast Minnesota Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: St. Paul, Minnesota : United States Departmenr of the Interior, Geological Survey, 1983 Resource Type: Map Access & Availability: Loading