flows SW to Mastodon Creek, 18 mi. NW of Ophir and 47 mi. NW of McGrath, Kilbuck-Kuskokwim Mts. 2.4 miles long.
Prospectors' name published in 1921 by U.S. Geological Survey (USGS).
Mount Hurst, Madison Mountain,
Streams:American Creek, Baker Creek, Basin Creek, Beaver Creek, Boob Creek, Bryan Creek, Deep Creek, Eldorado Creek, Esperanto Creek, Frisco Creek, Frying Pan Creek, Hurst Creek, Iron Creek, Ledge Creek, Mammoth Creek, Mastodon Creek, Steel Creek, Wilson Creek,