flows NE to Immoko River, 0.8 mi. SE of Ophir and 31 mi. NW of McGrath, Kilbuck-Kuskokwim Mts. 1.8 miles long.
Prospectors' name obtained in 1933 by J. B. Mertie, Jr., (in Smith, P. S., 1936, pl. 4), U.S. Geological Survey (USGS).
Caribou Mountain, French Joe Mountain,
Streams:American Creek, Anvil Creek, Beaver Creek, Brown Creek, California Creek, California Creek, Dodge Creek, Dollar Creek, Dome Creek, Ester Creek, Frying Pan Creek, Ganes Creek, Gold Run, Goldbottom Creek, Little Creek, Naden Creek, Ophir Creek, Ready Bullion Creek, South Fork Yankee Creek, Spalding Creek, Spruce Creek, Steel Creek, Tamarack Creek, Warner Creek, Yankee Creek,
Valleys:Six Gulch, Skookum Gulch, Victor Gulch,
Cities: