Introducing the Federal Data Terminations Tracker

Since the 2025 change in presidential administrations, disappearing federal datasets have drawn widespread attention, generating both concern and confusion about what has actually been terminated.

Join dataindex.us for a briefing on the release of the Federal Data Terminations Tracker the most policy-relevant, verified source of federal datasets terminated since January 2025. Having evolved from the crowdsourced Dearly Departed Datasets published in October 2025, the tracker combines community reporting with expert identification and review to provide a regularly updated record of terminations.

During the briefing, the team will explain the methodology behind the tracker, discuss why measuring data terminations is so challenging, and walk through the dozens of federal datasets identified as terminated.

A recording of the briefing will be shared publicly and emailed to all registrants.