flows W to Moose Creek, 5 mi. SE of its junction with Iditarod River, 17 mi. N of Flat and 54 mi. SE of Holikachuk, Kilbuck-kuskokwim Mts. 8.5 miles long.
Prospectors' name reported in 1912 by H. M. Eakin, U.S. Geological Survey (USGS).
Alder Creek, First Chance Creek, Franklin Creek, Hickey Creek, Horsefly Creek, Little Caribou Creek, Long Creek, Moose Creek, North Fork Otter Creek, South Fork Otter Creek, Twin Island Creek,
Cities: