Heads at 612000N, 1612800W, flows WSW to the Johnson River, 13 mi NE of Nunavak Anukslak Lake and 30 mi NNW of Bethel; Yukon-Kuskokwim Delta.
Eskimo name reported by Lieutenant L. A. Zagoskin, Imperial Russian Navy (IRN), in 1842-44 as "R(eka) Kvinchagak " directly to the Bering Sea at about Hazen Bay and thus may refer to another stream. along the stream in January 1879, and give the Eskimo name as "Kivvichavak," from which the present spelling is derived.