Explore how sea levels and coastal flooding have changed in frequency and magnitude for your chosen location. Use the latest sea level scenario projections to plan for the future.

The data, maps, and information provided should be used only as a screening-level tool for management decisions and 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 used for navigation, permitting, or other legal purposes.

https://coast.noaa.gov/sealevelcalculator/#/splash/1004802890/futureSeaLevels&search=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

Anything built on Boston Harbor should think twice.