Adams County Idaho

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Welcome to
Adams County, Idaho!

Adams County was created in 1911 from Washington County (which had been created from Boise County in 1879). It is named for America's second president, John Adams. It is comprised of 1,376 square miles of mountains, forests, rivers, high desert and is bordered on the west by Hells Canyon. Powerhouses of the Owbox and Hells Canyon dams are in Adams County. Historically, Council Valley was a meeting place for the Nez Perce and Shoshoni Native American Tribes.


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Indian Valley Store, 1986

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