California's Lake Berryessa's spillway, dubbed the Glory Hole, fully activated after an atmospheric river hit the region.

The unique water management design will probably remain active for several weeks. 'It's definitely worth seeing,' one ...

Water gushes into Lake Berryessa’s Glory Hole in Napa County for the first time in 6 years. (Beth Schlanker / The Press ...

Activated in 2017, and again in 2019, its long dormancy captures well the effects of the droughts California has suffered ...

Lake Berryessa's famed "Glory Hole" spillway, located about 80 miles north of San Francisco, experienced its first spillover in years after water levels on the man-made reservoir exceeded 440 feet ...

Water flows into the spillway at the Monticello Dam in Napa County's Lake Berryessa in 2019. (Terry Chea / Associated Press) ...

A mesmerizing whirlpool has opened up in California 's Lake Berryessa as relentless storms have swelled the state's rivers ...

Lake Berryessa's famed "Glory Hole" spillway, located about 80 miles north of San Francisco, experienced its first spillover in years after water levels on the man-made reservoir exceeded 440 feet, ...

The hole at Lake Berryessa is a unique drainage feature for that reservoir. It measures 72 feet at the top and then narrows to 30 feet. When the lake rises to 440 feet, water begins to spill into ...

Officially known as the Morning Glory Spillway, it has only rarely been activated, when levels are so high that Lake ...