Sea Level Rise Extent, 1.5 Feet Above Average High Tide (NOAA)

This layer depicts ocean-connected sea level rise for 1.5 feet above Mean Higher High Water, which represents the average high tide level at the current sea level. It shows both how far the water would extend and how deep it would be on land.

The data is sourced from NOAA’s Sea Level Rise Viewer, which utilizes digital elevation models and sea level projections to map these areas.

• Source: National Oceanic and Atmospheric Administration (NOAA)
• Original Download: https://coast.noaa.gov/slrdata/Depth_Rasters/index.html
• Additional Information: https://coast.noaa.gov/data/digitalcoast/pdf/slr-inundation-methods.pdf