The Ground Underneath the Map

The flood-map regime rests on a reference frame the geodetic agencies are actively rebuilding. End of 2026, every elevation moves; Gulf and Southeast Coast relative sea-level is already accelerating past 10 mm/yr. Five million NFIP policies sit on a static-planet assumption.

Author

Zacharias · Principal

Pages

14

Timeliness

Durable

Issue date

2026-05-26

Classification

Public

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