For the first time in 10 years, water began flowing Friday into Lake Berryessa's unique spillway, called the Monticello Dam Morning Glory Spillway -- but commonly known as the Glory Hole. The spillway, which operates similarly to a bathtub drain, wasn't fully spilling over Thursday, but by Friday morning, water was flowing into the 8-foot-wide pipe that dumps excess water down a 200-foot-long pipe into Putah Creek. "I would say it's a big drain in the lake," Bureau public affairs specialist Sarah McBride told the SF Gate. "It's unusual to see a spillway like that. We have people coming out there. It's definitely a sight to see." The last time the Glory Hole spilled over was 10 years ago in 2006. The water levels at Lake Berryessa were at 439.8 feet on Thursday. Then on Friday, the lake reached capacity -- 440 feet. On Sunday morning, the water level was 1.7 feet above the Glory Hole, allowing water to go over and into the spillway.

For the first time in 10 years, water began flowing Friday into Lake Berryessa's unique spillway, called the Monticello Dam Morning Glory Spillway -- but commonly known as the Glory Hole.

The spillway, which operates similarly to a bathtub drain, wasn't fully spilling over Thursday, but by Friday morning, water was flowing into the 8-foot-wide pipe that dumps excess water down a 200-foot-long pipe into Putah Creek.


Sam Jarosz/KCRA

"I would say it's a big drain in the lake," Bureau public affairs specialist Sarah McBride told the SF Gate. "It's unusual to see a spillway like that. We have people coming out there. It's definitely a sight to see."



The last time the Glory Hole spilled over was 10 years ago in 2006.

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The water levels at Lake Berryessa were at 439.8 feet on Thursday. Then on Friday, the lake reached capacity -- 440 feet. On Sunday morning, the water level was 1.7 feet above the Glory Hole, allowing water to go over and into the spillway.