Australia has the widest glory hole spillway in the world. It is located at DD coordinates ▲ -36.30585, 148.3159. It is in Geehi Reservoir; at Geehi Dam, in New South Wales, Australia. At 105’ it is the widest glory hole spillway in the world. A glory hole spillway is a bell-mouth spillway, named as such because when it is dry it resembles an upside down bell.
There is one in California, in Lake Berryessa at Monticello Dam on the border of Yolo County and Solano County. This dam is in such a narrow canyon that a traditional spillway would have been prohibitive to build. This glory hole spillway is 72’ in diameter and is at the east end of Lake Berryessa.
I just posted about it, with pictures and videos and drone footage, here ➜ Have you ever seen a bell-mouth spillway? (aka a “Glory Hole”) ■ .
