The dam was constructed on wooden piles with an interlocking steel sheet pile driven into the clay under the site. It is classified as a movable type dam, which means that the water is released under the dam, by the lifting the gates. There are five lift gates that stop debris and allow for easy water release. This image shows the operation building on the left and the future dam on the right, 1935. Operation building and the dam and lift gates, 2020.