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Lake Berryessa
> What is the hole in Lake Berryessa, California?
Frequently Asked Questions
What is the hole in Lake Berryessa, California?
What is the hole in Lake Berryessa, California?
The Glory Hole is a man-made spillway that services the Monticello Dam. When the water in the reservoir gets too high, the spillway redirects the flow of the water underground to prevent it from spilling over the dam.
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