Ruth I. Guzman-Otero 1994 A list of publications of the water-resources investigations conducted by the U.S. Geological Survey, Water Resources Division, for Puerto Rico and the U.S. Virgin Islands was compiled. The report includes publications regarding water-resources information in Puerto Rico and the U.S. Virgin Islands released from 1899 to 1992. The publications are grouped into four categories: by author(s), by specific locations in Puerto Rico and the U.S. Virgin Islands, by discipline of interest (ground water. surface water, water quality, floods and climate, geology, ground-water modeling, water-level contour maps, sediment, and water use), and by series or type of publication. Also a list of approved reports pending publication is included. application/pdf 10.3133/ofr93629 en U.S. Geological Survey ; USGS Earth Science Information Center, Open-File Reports Section [distributor], Publications of the U.S. Geological Survey, Water Resources Division, for Puerto Rico and the U.S. Virgin Islands, 1899-1992 reports