NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Jacksonville (FL) WFO - Duval, Clay, and Nassau Counties

This digital elevation model (DEM) is a part of a series of DEMs produced for the National Oceanic and Atmospheric Administration Office for Coastal Management's Sea Level Rise and Coastal Flooding Impacts Viewer. The DEMs created for this project were developed using the NOAA National Weather Service's Weather Forecast Office (WFO) boundaries. Because the WFO boundaries can cover large areas, the WFO DEM was divided into smaller DEMs to ensure more manageable file sizes. The Jacksonville (FL) WFO DEM was split into two smaller DEMs. They are divided along county lines and are: 1. Jacksonville (FL) WFO - Duval, Clay, and Nassau Counties 2. Jacksonville (FL) WFO - St. Johns, Flagler and Putnam Counties This metadata record describes the DEM for Jacksonville (FL) WFO - Duval, Clay, and Nassau Counties. The DEM includes the best available lidar data known to exist at the time of DEM creation for the coastal areas of Duval, Clay, and Nassau counties, that met project specifications. The DEM is derived from LiDAR datasets collected for the Florida Department of Emergency Management (FDEM). LiDAR data for Nassau, Duval, and Clay counties were collected between 2004 and 2008. Hydrographic breaklines used in the creation of the DEM were obtained from FDEM. The DEMs are hydro flattened such that water elevations are less than or equal to 0 meters. The DEM is referenced vertically to the North American Vertical Datum of 1988 (NAVD88) with vertical units of meters and horizontally to the North American Datum of 1983 (NAD83). The resolution of the DEM is approximately 5 meters.