Climate change’s hotter temperatures and society’s diversion of water have been shrinking the world’s lakes by trillions of gallons of water a year since the early 1990s, a new study finds.

A close examination of nearly 2,000 of the world’s largest lakes found they are losing about 5.7 trillion gallons (21.5 trillion liters) a year. That means from 1992 to 2020, the world lost the equivalent of 17 Lake Meads, America’s largest reservoir, in Nevada. It’s also roughly equal to how much water the United States used in an entire year in 2015.