NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Washington, Northwest Puget Sound

These data were created as part of the National Oceanic and Atmospheric Administration Office for Coastal Management's efforts to create an online mapping viewer called the Sea Level Rise and Coastal Flooding Impacts Viewer. It depicts potential sea level rise and its associated impacts on the nation's coastal areas. The purpose of the mapping viewer is to provide coastal managers and scientists with a preliminary look at sea level rise and coastal flooding impacts. The viewer is a screening-level tool that uses nationally consistent data sets and analyses. Data and maps provided can be used at several scales to help gauge trends and prioritize actions for different scenarios. The Sea Level Rise and Coastal Flooding Impacts Viewer may be accessed at: https://coast.noaa.gov/slr.

This metadata record describes the Washington, Northwest Puget Sound digital elevation model (DEM), which 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 described above. This DEM includes the best available lidar known to exist at the time of DEM creation that met project specifications. This DEM includes data for Island, San Juan, Skagit, Snohomish, and Whatcom Counties.

The DEM was produced from the following lidar data sets:
1. 2019 NOAA Lidar: Padilla Bay NERR and Skagit River Delta, WA
2. 2016 West Washington Lidar
3. 2014 Island County, WA Lidar
4. 2014 USACE/USGS Topobathy Lidar: Puget Sound (WA)
5. 2014 PSLC Lidar: Cedar River Watershed Project - Delivery 1
6. 2013 Puget Sound Lidar Consortium (PSLC) Nooksack River Lidar
7. 2013 City of Bellingham Lidar
8. 2013 San Juan County, WA Lidar
9. 2009 Puget Sound Lidar Consortium (PSLC) Lidar: San Juan County and Lummi Island
10. 2006 USGS Lidar: North Puget Sound, Washington
11. 2005 Puget Sound Lidar Consortium (PSLC) Lidar: Nooksack River - Lummi Tribe (Puget Sound Lowland Project)

The DEM is referenced vertically to the North American Vertical Datum of 1988 (NAVD88, Geoid12B) with vertical units of meters and horizontally to the North American Datum of 1983 (NAD83). The resolution of the DEM is approximately 3 meters.