How far did Mexico City sink in the 1900's?

Answer 1

6-8 inches
In the early decades of the 20th century, annual sinking rate in the city center of Mexico City averaged about 2 inches, but when it peaked at mid-century, the soil was collapsing away at the rate of 19 inches a year. Now it has "recovered" to a sinking rate of about 2.5 inches a year.

Answer 2

Some parts of Mexico City are actually sinking a couple of inches a year, due to water table depletion. This doesn't mean Mexico City will fall into a sinkhole; it just means it will eventually adjust to the actual regolith level.

Answer 3

6 to 8 inches a year

Answer 4

On Kidnap the answer is 6-8

Answer 5

30 feet

Answer 6

6 to 8 in per year