This map shows federal disaster declarations issued by FEMA over the last three years, aggregated by state. It's built as a single HTML file using the ArcGIS JavaScript SDK 4.29 — no server, no framework, deployed in minutes.

FEMA Open Government Data API. All declarations are pulled live on page load — the counts always reflect the current federal record.

Click any state to see its declaration count in the right panel. Use the left sidebar to explore breakdown by declaration type. Collapse the sidebar with the arrow button to maximize the map view.

Jeff Franzen — Independent GIS Consultant.
Built with AI-assisted ArcGIS SDK development.