California dominated the rankings, accounting for six of the ten biggest-budget cities in the U.S.

Analysts assessed 182 US cities to find the top, and bottom, five.

The nation's biggest cities are sinking, according to data from a new study. Known scientifically as land "subsidence," the most common cause of the sinking is "massive ongoing groundwater extraction, ...

Subsidence, often called an "invisible threat," can damage infrastructure and increase flood risks. While some cities show slight uplift, it's negligible and doesn't negate the overall sinking trend.