Mesmerizing Drone Footage Shows "Whirlpool" Draining This Lake
Transcript
Lake Berryessa, Napa Valley, California
This mesmerizing 72-foot-wide "whirlpool" is actually a man-made structure.
Like the drain in your bathtub, it’s designed to drain the water in the lake.
It’s a type of “spillway” that engineers build into dams to prevent flooding.
Lake Berryessa is at maximum capacity after receiving the most rain in a decade.
