extends SE to headwaters of Nagugun Creek, 58 mi. NE of Goodnews, Kilbuck-Kuskokwim Mts.
Name derived from Nagugun Creek of which it is the source; published in 1951 by U.S. Geological Survey (USGS).
Goodnews Lake, Kanuktik Lake, Klak Lake, Nagugun Lake,
Mountains:Mitlak Mountain, Nigag Mountain, Tuntunguak Mountain, Ungluayagat Mountain,
Rivers:Streams:Amakatatee Creek, Kanuktik Creek, Nagugun Creek, Paiyun Creek,