Formerly a region of small manufacturing, canal transport, lumbering, and farming, the present focal point of the area's economic life is Lake Wallenpaupack with its related resort and vacation enterprises. Lake Wallenpaupack, the third largest lake in Pennsylvania, was man-made by Pennsylvania Power & Light. Construction was completed in 1926. Before that, only a stream flowed through the beautiful valley. The local Leni Lenapi Indian tribe called the stream "Wallenpaupack" which means "the stream of swift and slow water."