Houston is sinking faster than any other city in the U.S., according to a new study from the Columbia Climate School—and the problem may only be getting worse.

Houston is sinking, and it’s doing it faster than any other major city in the country, according to a new report released in Nature Cities this week. The study was done using satellite-based radar measurements to monitor the land under the nation’s 28 largest metropolitan areas.

While land sinking less than an inch per year might not seem like much on paper, small shifts in land can have big effects. Land shifts downward can impact the structural integrity of buildings, roads,