My local county has an official "hazards map" which lists and maps areas subject to severe earthquake shaking,liquifaction zones (also EQ related), 100 year and 500 year flood areas, regions subject to tsunami inundation, and similar goodies.
In most jurisdictions, I believe there is a requirement to inform prospective buyers if the land is within a 100 year flood zone
One of the things I had to sign when buying my house was an acknowledgment of assessed hazards (earthquakes, fires, floods, aviation, etc.).