Filed Under Thompson Falls

Thompson Falls Hydroelectric Dam Historic District

Missoula senator Edward Donlan, Dr. Everett Peek, and Arthur Preston organized the Thompson Falls Light and Power Company in 1910 to develop electricity for the community and promote the concept of a hydroelectric power station. The monumental project promised progress and opportunity for the little frontier town along the riverbank. In anticipation, Dr. Peek built a hospital near the proposed power plant site. In 1911, the county erected two steel bridges across the Clark Fork River retiring the old cable-drawn ferry. The Thompson Falls Power Company constructed a small plant to service the community and the project itself. The town bustled, construction boomed, and a glorious future seemed inevitable. The Ledger confidently predicted lucrative future projects. By 1916, the main and dry channel dams, power house, and superintendent’s house were among some thirty project structures sprawled along the riverbank. By 1917, the plant supplied 30,000 kilowatts of electricity to the region, crossing into Coeur D’Alene, Idaho. Technology loomed downriver in the huge dam. But after World War I no more major projects boosted the local economy, and men like Donlan and Peek “…who had championed those ideas had already left town to find that dream some other place.” The power company dismantled all but a few of the project buildings, leaving Thompson Falls to survive on its own. Today the remaining structures represent the community’s early development, providing an excellent example of early-twentieth-century hydroelectric technology.

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Thompson Falls Hydroelectric Dam Historic District
Thompson Falls Hydroelectric Dam Historic District Thompson Falls Hydroelectric Dam Historic District, view of the dam. Source: Creator: Date: July 2008


US ALT 10 at Clark Fork River within northwest part of Thompson Falls, Montana | Private/Public


The Montana National Register Sign Program, “Thompson Falls Hydroelectric Dam Historic District,” Historic Montana, accessed May 25, 2024,