This application is designed for use on desktop computers and tablets in landscape mode.


Sea Level Rise Viewer

Sea Level Rise

View sea level rise and potential coastal flooding impact areas and relative depth.

Local Scenarios

Compare inundation levels to local relative sea level rise scenarios.

Mapping Confidence

View the level of confidence in the base data used for mapping inundation levels.

Marsh Migration

View potential changes in marsh and other land cover types based on inundation levels.


View the potential impact of sea level rise and coastal flooding on a vulnerable population.

High Tide Flooding

View areas susceptible to high tide flooding, or "nuisance flooding," and the number of historical flood events that have occurred.


The data and maps in this tool illustrate the scale of potential flooding, not the exact location, and do not account for erosion, subsidence, or future construction. Water levels are relative to Mean Higher High Water (MHHW) (excludes wind driven tides). The data, maps, and information provided should be used only as a screening-level tool for management decisions. As with all remotely sensed data, all features should be verified with a site visit. The data and maps in this tool are provided “as is,” without warranty to their performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of these data is assumed by the user. This tool should be used strictly as a planning reference tool and not for navigation, permitting, or other legal purposes.