Description
Cottonwood Slough is located anabranch of Yukon River, 1 mi. E of Horse I. and 10 mi. S of Holy Cross, Innoko Low. 2.4 miles long.
History
Descriptive name reported in 1916 by G. L. Harrington and R. H. Sargent (in Harrington, 1918, pl. 1), U.S. Geological Survey (USGS).