U.S. Geological Survey, Coastal Zone Topobathymetric DEM: U.S. Geological Survey: Reston, VA, http://ned.usgs.gov/, http://nationalmap.gov/viewer.html.
Summary
This is the Original Product Resolution (OPR) Digital Elevation Model (DEM)of a topobathymetric model as provided to the USGS National Geospatial Technical Operations Center (NGTOC). This DEM is delivered in the original resolution, with the original spatial reference as it was provided to the NGTOC. All elevation units have been converted to meters.
Summary
This is the Original Product Resolution (OPR) Digital Elevation Model (DEM)of a topobathymetric model as provided to the USGS National Geospatial Technical Operations Center (NGTOC). This DEM is delivered in the original resolution, with the original spatial reference as it was provided to the NGTOC. All elevation units have been converted to meters.
The National Map provides basic elevation information for earth science studies and mapping applications in the United States. The data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, and mapping and visualization applications.
