Cascade is a rural city in and the county seat of Valley County, Idaho. The population was 939 at the 2010 census, down from 997 in 2000.Cascade is located on the southeast shore of Lake Cascade, formerly known as "Cascade Reservoir." With the introduction of the Tamarack Resort in 2004, the name was officially changed to sidestep the negative marketing connotations of "reservoir." It was formed by the completion of Cascade Dam, on the north side... Show more

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