A Little Lake Reveals Clues About Past Megadroughts

Scientists stumbled on Fallen Leaf Lake and the ancient trees under its surface

Scientists found important climate clues hidden away under Fallen Leaf Lake, just south of Lake Tahoe.

Graham Kent wasn’t researching megadroughts when he and a team of scientists began studying Fallen Leaf Lake, just south of Lake Tahoe. They were mapping faults. The little lake is a good place to study West Tahoe Fault, which cuts right through it.

“Little did we know it was a natural lab for droughts, as well,” Kent, director of the Nevada Seismological Lab at University of Nevada, Reno, told me over the phone. “So what started out as a seismic hazard endeavor became both a seismic hazard and climate study.”

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