The 474 foot long, 15 foot high concrete dam was constructed in 1914, and in 1994 its apron was raised with a 5-foot high inflatable bladder (the "longest in the world"), which can be raised or lowered in 30 minutes.
The 474 foot long, 15 foot high concrete dam was constructed in 1914. In 1994 its apron was raised with a 5-foot high inflatable bladder (the "longest in the world"), which can be raised or lowered in 30 minutes.