1. Potentiometric surface and hydrologic conditions of the upper aquifer in the Manati-Vega Baja area, north central Puerto Rico, March 1995 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Guaynabo, Puerto Rico : U.S. Department of the Interior, U.S. Geological Survey, 1997 Resource Type: Map Access & Availability: Loading
2. Potentiometric surface of the alluvial aquifer and hydrologic conditions in the Juana Díaz area, Puerto Rico, June 29 - July 1, 2005 Author/Creator: Rodríguez, José M. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2006] Resource Type: Map Access & Availability: Loading