I spent the day along the Susquehanna River in Maryland yesterday. We visited a large dam, the Conowingo Dam, built in 1928. It is classified as a medium height, masonry gravity dam. But what’s really interesting about the dam is that when electricity is being produced and the generators are cranked up, the fish that are residents of the river are churned around and brought toward the surface of the river. The vultures and eagles are clever enough to take advantage of this, and the Conowingo is a gathering place for the local vultures, and the migrating eagles. Here are some pictures I took.