The St Regis River begins at Lookout Pass in which mountain pass on the Idaho/Montana border?
St. Regis River (Montana) The St. Regis River is an approximately 32.5 mi tributary of the Clark Fork of the Columbia River in Montana in the United States. It begins at Lookout Pass on the Idaho/Montana border, flows east and ends at the confluence with the Clark Fork in the city of St. Regis. Its drainage is 330 sqmi . The record high flow for the St. Regis River in Montana was recorded on May 19, 1954 at 11,000 cubic feet per second according to USGS gaging data.
Buchanan Pass Buchanan Pass, elevation 11844 ft , is a mountain pass located in the Rocky Mountains of north-central Colorado in the United States. The pass is toward the northern end of the Indian Peaks of the Front Range on the Grand-Boulder county line, between the Buchanan Creek drainage to the west and the Middle St. Vrain Creek drainage to the east. It is traversed by the Buchanan Pass Trail which travels from its junction with the Cascade Creek Trail on the west to the Camp Dick campground on the east, close to Peaceful Valley. The pass is in the Indian Peaks Wilderness of the Arapaho and Roosevelt National Forests and is the eastern-most mountain pass on the continental divide.