The Kettle River Range, often called the Kettle Range, is the southernmost range of the Monashee Mountains, located in far southeastern British Columbia, Canada and Ferry County, Washington, in the United States. Most of the northern half of the range is protected by the Colville National Forest and the southern half of the range is located on the Colville In…The Kettle River Range, often called the Kettle Range, is the southernmost range of the Monashee Mountains, located in far southeastern British Columbia, Canada and Ferry County, Washington, in the United States. Most of the northern half of the range is protected by the Colville National Forest and the southern half of the range is located on the Colville Indian Reservation. The highest peak is Copper Butte, which reaches 2,177 metres. The range is crossed by Washington State Route 20 at Sherman Pass.