23 hours ago · 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 ...

5 days ago · Watch: Water pours into Lake Berryessa ‘Glory Hole’ for the first time in 6 years, water agency says. The hole at Lake Berryessa is a unique drainage feature that is the overflow valve for ...

6 days ago · The Glory Hole pulls water out of the reservoir and spills it out on the other side of Monticello Dam, into Putah Creek. Pleasant Hill Lake in Perrysville, Ohio also has a spillway like this.

4 days ago · The Glory Hole acts as flood mitigation for the the manmade lake, serving as a massive funnel once water levels reach about 440 feet. Last year, water levels at the spillway edged on the brink of ...

6 days ago · Lake Berryessa, a manmade reservoir in Napa County created by the Monticello Dam, has been hovering at a 436' water surface level since the beginning of the year. The lake spills at the 440' mark ...

Mar 15, 2019 · This is the ‘The Glory Hole’ at Lake Berryessa. Officially, its name is the ‘Morning Glory Spillway,’ as the hole is actually a unique spillway for the lake and Monticello Dam.

Mar 28, 2024 · The hole is a circular concrete pipe that’s 72 feet across and juts just above the lake’s surface. Water fills the spillway when the lake’s surface level reaches 440 feet.

Apr 19, 2024 · Lake Berryessa’s spillway, famously known as the Glory Hole, has been on the brink of activation for more than two weeks, hanging a few inches away from a full spill for what’s likely the longest...

The Morning Glory Spillway at Lake Berryessa is an impressive, and unusual, sight. But how does the spillway, more commonly known as 'The Glory Hole,' actually work? And why did engineers...

During wet winters the when the lake hits capacity (defined as a lake level above 440 feet msl), water starts flowing over this circular spillway popularly known as the Glory Hole - more formally known as a Morning Glory Spillway - into Putah Creek on its way to the City of Winters.