Instead, Bezaury says, Mexico City, North America's largest city, is facing the exhaustion of the Cutzamala aqueduct system, which brings the metropolis up to 25 percent of its water, from reservoirs across the surrounding state of Mexico.
Climate change is changing the [likelihood] of these extreme events, says Sarah Kapnick, chief scientist at the U.S. National Oceanic and Atmospheric Administration.
The more the aquifer dries up, the more Mexico City sinks, Bezaury says. Some parts of the city are sinking by up to 20 inches per year. He adds that Mexico City is already pumping more than twice the water from the aquifer that can be replaced by surface water infiltration.
We paved the hell out of [the Valley of Mexico], Bezaury says, and there is almost certainly no infiltration. Most of the rainwater lingering on the surface evaporates.
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