Search Results
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile shows the outlines of major calderas and impact structures in the United States. This layer is part of the Geologic Map of the ... Geological Survey (U.S.).
2003. California. Department of Water Resources. The polygon shapefile contains the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resources (B... California. Department of Water Resources.
2016. California. Department of Water Resources. This polygon shapefile contains the boundaries of 517 groundwater basins and subbasins as defined by the California Department of Water Resources a... California. Department of Water Resources.
2000. California. Department of Fish and Game. Marine Resources Region and Geological Survey (U.S.). This point shapefile contains information on names, locations, and types of geographic features in California. The layer source is a custom state e... California. Department of Fish and Game. Marine Resources Region.
2015. San Joaquin County (Calif.). Community Development Department. This polygon shapefile represents earthquake zones in San Joaquin County, California as of July 2015. Zones were established by the California Geol... San Joaquin County (Calif.). Community Development Department.
1945. VMap1 is a vector digital topographic reference product developed by Natural Resources Canada (NRCan) and The Department of National Defence (DND).... Canada Centre for Mapping and Earth Observation.
1945. VMap1 is a vector digital topographic reference product developed by Natural Resources Canada (NRCan) and The Department of National Defence (DND).... Canada Centre for Mapping and Earth Observation.
1945. VMap1 is a vector digital topographic reference product developed by Natural Resources Canada (NRCan) and The Department of National Defence (DND).... Canada Centre for Mapping and Earth Observation.
2001. Eastern Energy Resource Surveys Team (Geological Survey). This polygon shapefile shows the coal fields of Alaska and the conterminous United States. Most of the material for the conterminous United States ... National Atlas of the United States.
1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, and 2014. U.S. Fish and Wildlife Service. This polygon shapefile represents the extent, approximate location and type of wetlands and deepwater habitats in the Northeastern United States be... U.S. Fish and Wildlife Service.