Milltown Dam Site, Montana

The Milltown Dam was located here at the confluence of the Clark Fork and Blackfoot rivers, for 100 years, creating a reservoir that collected 100 years of sediment from the mining operations at Anaconda and Butte, some of the largest mining operations in the country. The result was what amounted to the downstream end of the longest EPA superfund site in the nation, comprised of the 120 miles of the Clark Fork River, from here to Butte, and parts of the Anaconda and Butte mines and smelting operations. The dam was removed in 2008, and cleaning up the sediments has been an ongoing process.