Twin Lake was dammed and used to supplement the factory’s water needs at the now-defunct McKean Chemical Company in Pennsylvania. US Forest Services obtained the lakes and the surrounding land in the 1920s, and it sat unused for a few years. The Civilian Conservation Corporation, as a part of Franklin D. Roosevelt’s New Deal program, tore down the original dam, which was poorly constructed, and rebuilt a new one in its place. CCC also built the campground and play area, anticipating a future recreational use. They originally planned to dam the other “twin” lake, but the funding was instead diverted to a different recreational area. That other twin lake has since then dwindled and lost its “lake” status.