Aqueous geochemistry in support of machine learning models for the glacial aquifer system, northern USA

Craig Brown, USGS New England Water Science Center, Northborough, United States, Paul E. Stackelberg, USGS New York Water Science Center Troy, Troy, NJ, United States, Melinda L Erickson, U.S. Geological Survey, Upper Midwest Water Science Center, Minneapolis, MN, United States and Sarah M. Elliott, USGS Upper Midwest Water Science Center, Mounds View, MN, United States