1. Maps showing dissolved oxygen and dissolved manganese threshold events in depth zones used by the domestic and public drinking water supply wells, Central Valley, California Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Reston, Va. : U.S. Department of the Interior, U.S. Geological Survey, 2018 Resource Type: Map Access & Availability: Loading
2. Predicted pH in depth zones used by domestic and public drinking water supply wells, Central Valley, California Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2017 Resource Type: Map Access & Availability: Loading
3. Nitrate in ground water : using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States Author/Creator: Hitt, Kerie J. Publication/Creation: Reston, Va. : USGS National Water-Quality Assessment Program, 2005 Resource Type: Map Access & Availability: Loading