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1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, and 2002. EROS Data Center. The grayscale North America shaded relief data were derived from the GTOPO30 elevation data. GTOPO30 is a global digital elevation model (DEM) with... National Atlas of the United States.
2006. EROS Data Center. The grayscale Puerto Rico and U.S. Virgin Islands shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain ... National Atlas of the United States.
2002. EROS Data Center. The grayscale Puerto Rico and U.S. Virgin Islands shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain ... National Atlas of the United States.
2016. County of San Mateo Information Services Department and California. Department of Water Resources. Ground Water Basins in San Mateo County. Source: California Department of Water Resources. This layer is part of the San Mateo County Sea Level Ris... County of San Mateo Information Services Department.
2016. California. Department of Water Resources. This point shapefile represents groundwater elevation in California for spring 2016. This layer shows the depth to groundwater values collected fro... California. Department of Water Resources.
2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, and 2014. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2004 and fall 20... California. Department of Water Resources.
2009, 2010, 2011, 2012, 2013, and 2014. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2009 and fall 20... California. Department of Water Resources.
2010, 2011, 2012, 2013, 2014, and 2015. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2010 and fall 20... California. Department of Water Resources.
2011, 2012, 2013, and 2014. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2011 and fall 20... California. Department of Water Resources.
2012, 2013, 2014, and 2015. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2012 and fall 20... California. Department of Water Resources.