Most published palaeoflood databases are outdated, lack hydrological data, and are difficult to access, especially for non-academic users such as flood risk managers. PaleoRiada, the first open palaeoflood database for Spain, addresses these issues by compiling data from 299 palaeoflood records, accessible through an open-access web platform. The database supports the revision of Potential Significant Flood Risk Areas and provides insights for regions not included in current national flood maps.