Owyhee Dam Ring Gate Spillway "The Glory Hole"
The Owyhee Dam has a unique spillway known as "The Glory Hole" located partway up the dam that utilizes a 60-foot (18 m) in diameter tunnel to send excess water to the river below. This spillway acts like a sink drain during high-water periods.
Check out the links below to watch some aerial videos of the spillway in action courtesy of The Idaho Statesman & The Bureau of Reclamation.
Visit the Bureau of Reclamation Site for more Project Details: