This submission includes publicly available data extracted in its original form. Please reference the Related Publication listed here for source and citation information:
NOAA Office for Coastal Management. (2025, Februrary 22). Sea Level Rise Viewer. Data Download. https://coast.noaa.gov/slrdata/. If you have questions about the underlying data stored here, please contact NOAA Office for Coastal Management by submitting this form: https://coast.noaa.gov/contactform/. If you have questions or recommendations related to this metadata entry and extracted data, please contact the CAFE Data Management team at: climatecafe@bu.edu.
This dataset consists of the geospatial data layers that are behind NOAA's Digital Coast Sea Level Rise Viewer, which models sea level rise and coastal flooding impacts. Innudation is modelled at mean higher high water (MHHW) levels between 0 and 10 feet in 1/2 foot increments, for 30 states and US territories with ocean front coasts. The data illustrate the scale of potential flooding, not the exact location, and do not account for erosion, subsidence, or future construction. The data are intended for use as a screening-level tool for planning and management decisions. Datasets are subdivided into the following folders, and in most cases are geographically segmented by states and regions in states:
- Ancillary: supporting data files, including inundation polygons merged by region and stored as geodatabases and shapefiles
- NOAA OCM SLR MergedPolys Shapefiles 0225: inundation polygons merged by region and stored as shapefiles
- DEMs: lidar-based high resolution digital elevation models stored as geotiffs
- Depth Rasters: rasters of ocean-connected sea level rise inundation for 0-10ft above MHHW as geotiffs
- Extent Rasters: single value rasters of ocean-connected sea level rise inundation for 0-10ft above MHHW as geotiffs
- High Tide Flodding: potential innundation extent of coastal areas resulting from high tide flooding as geotiffs
- Marsh Migration: nationally consistent wetland impact and migration products as geotiffs
- Mapping Confidence: data representing the confidence a user can have in the mapped inundation extent of a given sea level rise amount as geotiffs
- Sea Level Rise Vectors: polygon data representing the extent of ocean-connected sea level rise inundation and hydrologically unconnected low areas that may also be inundated as geopackages
- Tidal Surfaces: MHHW tidal surfaces used in NOAA OCM’s sea level rise mapping
Documentation for the SLR tool, methodology for creating the datasets, and reports that discuss the data are included. An updates html file lists running updates to the products over several years of development. https://coast.noaa.gov/slrdata/ (2025-02-22)
