Extends E 13 mi off Naknek lake, on Alaska Peninsula, in Katmai National Monument, 23 mi NW of Mount Katmai, Aleutian Range.
Eskimo name published in 1922 by R.F. Griggs, National Geographic Society, for this very deep lake. On some Russian maps the name "Iliuk" is applied to Naknek Lake. In 1923, R.H. Sargent, U.S. Geological Survey (USGS), reported another native name as "Nanva-Nelhook," meaning "very bad lake."
Lake Grosvenor, Iliuk Arm Naknek Lake,
Mountains:Mount Katolinat, Mount Kelez, Mount La Gorce,
Mountain Passes:Rivers:River Lethe, Savonoski River, Ukak River,
Streams:Knife Creek, Margot Creek, Windy Creek,
Valleys: