heads at glacier 10 mi. E of Snowcap Mtn., flows SE to Chakachamna Alke, 54 mi. NW of Tyonek, Alaska Range. 27 miles long.
Named for Chief Chilligan of Tyonek, "who built a cabin on this river about 1896"; reported in 1929 by U.S. Geological Survey (USGS).
Harpoon Glacier, Shamrock Glacier,
Lakes:Ch-akajabena Lake, Kenibuna Lake, Max Lake, Shamrock Lake,
Rivers: