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City of BostonA prototype of Analyze Boston by Datopian, not an official City of Boston website. Visit Boston.gov

Coastal Flood Resilience Overlay District

Boston Maps

Updated Nov 8, 2026

About this dataset

The Coastal Flood Resilience Zoning Overlay District goes beyond the areas identified in FEMA flood maps, applying to areas of the City that could be inundated during a major coastal storm event, known as a 1 percent chance flood event with 40-inches of sea level rise. The zoning overlay promotes resilient planning and design, provides consistent standards for the review of projects, and maximizes the benefits of investments in coastal resilience.

Data and resources (6)

Prototype by Datopian · not an official government website · data from data.boston.gov