Hodgson Lake is a perennially ice-covered freshwater lake, which is about 2 km (1.2 mi) long by about 1.5 km (0.93 mi) wide. It is located within the southern part of
Alexander Island, west of
Palmer Land in
Antarctica, at approximately 72°S
latitude and 68°W
longitude. This lake has a 93.4 m (306 ft) deep water column that lies sealed beneath a 3.6 to 4.0 m (12 to 13 ft) thick perennial lake ice. The lake is an ultra-
oligotrophic lake with very low nutrient content and very low productivity. There is no detectable life living in Hodgson Lake. The lake extends eastward into
George VI Sound and the
George VI Ice Shelf making it adjacent to the sound. The northern side of this lake is bounded by the
Saturn Glacier, which flows east into George VI Sound. The lake lies next to and southeast of
Citadel Bastion, a pre-eminent mountain on Alexander Island.