Major US cities are sinking
Twenty-eight major U.S. cities, including New York, Dallas, and Seattle, are seeing urban areas sink by 2 to 10 millimeters per year, according to new research from Virginia Tech. The major cause is groundwater extraction.
Published in Nature Cities, the study used satellite-based radar measurements to create high-resolution maps of subsidence, or sinking land, for 28 of the most populous U.S. cities. The cities are home to 34 million people, about 12 percent of the total U.S. population.
In every city studied, at least 20 percent of the urban area ...