Lake Berryessa is the largest lake in Napa County, California. This reservoir in the Vaca . Raising Monticello dam is highly unlikely but one possible way to increase water storage at the lake is to raise the height of Glory Hole. Lake Berryessa.
When water gets too high on Lake Berryessa, 'The Glory Hole' gets to work.
When the water gets too high at the Monticello Dam at Lake Berryessa, there's a simple solution: open the Morning Glory Spillway. Hit the.