Lost Rivers
View of Mackay

Arco, ID

Arco is a city in Butte County, Idaho, United States. The population was 1,026 at the 2000 census. The city is the county seat of Butte County. Craters of the Moon National Monument is located near Arco along U.S. Route 20, southwest of the city. The Idaho National Laboratory (INL) is located east of Arco. Arco is located along the Big Lost River and is a gateway to the Lost River Valley.

Arco was the first community in the world ever to be lit by electricity generated by nuclear power. This occurred on July 17, 1955, powered by a reactor at the nearby "National Reactor Testing Station" (NRTS), which is now the Idaho National Laboratory.

City of Arco Website

Mackay, ID

Mackay is a small town with BIG personality. Part of that personality is an unmistakable Western charm that’s reminiscent of the town’s history as a mining settlement and of its present stature as one of the West’s last real ranching communities.

With Idaho’s nine highest peaks at Mackay’s back door, the area boasts abundant wildlife and unlimited recreation, including some of the world’s best hunting, hiking, and trout fishing. A cruise down Mackay’s Main Street offers opportunities for excellent “down home” food and a splendid view of the mountains. You won’t find smog or freeways, just friendly people! And getting to Mackay is easy. U.S. Highway 93 traverses right through the center of town.

City of Mackay Website

Howe, ID

Howe is a small town that borders the wide Snake River plain and provides access to the less known side of the Lost River Range north through the Pahsimeroi Valley. With access to incredible fishing, hiking, hunting, and other outdoor activities, Howe is a wonderful portal to your Lost River adventure.

Arco: 208-527-3060
Mackay: 208-588-2693
P.O Box 46
159 N. Idaho
Arco, ID 83213
lred@atcnet.net