In Wrangell-St. Elias Wilderness, heads 13 km (8 mi) W of the US-Canada border at Columbus Glacier, part of the Bering Glacier System in SE Alaska, extending from Shelter Glacier in the W to the Golumbus Glacier in the E and bordered by the Chugach and Elias Mountains. 80 miles long.
Named for Colonel James W. Bagley (1881-1947). U.S. Geological Survey (USGS) topographer.