More than 40% of Houston's land mass is subsiding at least one-fifth of an inch per year, they said, but that rate varies drastically across the city. The worst spots are sinking 10 times faster.

The nation's fastest-sinking city is Houston, with more than 40% of its area dropping more than 5 millimeters (about 1/5 inch) per year, and 12% sinking at twice that rate.

In Texas, parts of Houston are sinking at a rate faster than 10 millimeters—or about two-fifths of an inch—per year. Parts of Dallas and Fort Worth are sinking more than 5 millimeters per year.

Houston is the fastest sinking city with "more than 40% of its area subsiding more than 5 millimeters (about 1/5 inch) per year, and 12% sinking at twice that rate," according to the study.

The study, published in the journal Nature Cities, found that 42% of Houston's land area was sinking about one-fifth inch per year, with 12% sinking at more than double that rate.

Ten percent of the area in Chicago and New York City was also found to be sinking at a rate of three millimeters per year. Researchers said about 34 million people—about 10 percent of the U.S ...

Dallas and Fort Worth are sinking at a rate of 4 millimeters per year due to groundwater loss, a recent study found. ... Houston's subsidence issues have been well documented, ...

More than 40% of Houston's land mass is subsiding at least one-fifth of an inch per year, they said, but that rate varies drastically across the city. The worst spots are sinking 10 times faster.

Houston isn't the only city in Texas that's sinking. Our neighbors to the north are going through it, too. Both Dallas and Fort Worth have average subsidence rates of more than four millimeters ...