extends SW from mouth of Izavieknik River, 75 mi. NE of Goodnews, Kilbuck-Kuskokwim Mts.
Eskimo name reported as "Oz(ero) Tugiak" meaning "Lake Tugiak" by Lieutenant Sarichev, (1826, map 3), Imperial Russian Navy (IRN).
Nanavochtshak Lake, Nenevok Lake, Togiak Lake, Upper Togiak Lake, West Togiak Lake,
Locales:Mountains:Kolchichet Mountain, Pistuk Peak,
Rivers:Streams:Bruin Creek, Jondik Creek, Kipnuktuli Creek, Ougamantamuk Creek, Sand Creek, Sunday Creek, Trail Creek, Truman Creek, West Creek,