Marcy Dam was a wooden dam on the Marcy Brook in the Adirondack High Peaks in North Elba, New York, United States; it impounded Marcy Dam Pond. An early version of the dam was constructed by the Conservation Corps during the 1930s. It was rebuilt most recently during the early 1970s. Marcy Dam can be reached only by hiking; it lies 2.1 miles (3.4 km) from the Adirondack Loj at an elevation of 2,362 feet (720 m) surrounded by Whales Tail Mountain, Wright Peak, Algonquin Peak, Avalanche Mountain, Mount Colden, TR Mountain, and Phelps Mountain.