East Helena was named for its location in relation to Helena. In 1888, a large lead smelter was built and operated until 2001. East Helena grew up around that enterprise. For over a century, the smelter processed 70,000 tons of lead bullion a year, and provided a livelihood for thousands of families. Nearby East Helena abounds with recreation opportunities on Holter, Hauser, and Canyon Ferry Lakes, which were all created by dams on the Missouri River.