In response to a request from the Sanitation and Engineering Section of the Alaska Department of Health, a reconnaissance of the possibility of obtaining ground-water supplies for the five villages in the lower Kuskokwim-Yukon River area was made by the Geological Survey early in June 1955. The five Eskimo villages--Kwethluk, Hooper Bay, Chevak, Tununak, and Kwigillingok--are in western Alaska between the lower reaches of the two rivers. (See sketch page two). As there has been no development of ground water in the area, this report is based on a brief investigation of the surficial geology and the topography.