On the lower Susquehanna River, only 10 miles upstream from the Chesapeake Bay, stands the Conowingo Hydroelectric Generating Station. The Exelon Power Company owns the masonry gravity dam, which has been operating since 1928. At the time of its opening, the dam was second in size only to the hydroelectric dam at New York’s Niagara Falls. At 94-feet tall and 4,648-feet wide, the Conowingo Dam is four times wider than the Hoover Dam. It spans the Susquehanna connecting Cecil and Harford Counties in northern Maryland. As the state’s largest producer…
