Hillier Lake, Northern lake in Saskatchewan, Canada.

Hillier Lake is a body of water located in northern Saskatchewan, situated in a sparsely populated region of boreal forest and wetlands. The shoreline is bordered by low vegetation and remote wilderness terrain typical of Canada's north.

The region was documented during early European explorations of Canada's north and later systematically surveyed during geological mapping efforts. These waterways played an important role in understanding the landscape's topography and water resources.

Hillier Lake lies within Treaty 6 territory, the homeland of Cree peoples, who have long used the lakes of northern Saskatchewan for fishing, trapping and travel by canoe in summer and by snowshoe and dog team in winter. The lake's name honours a surveyor rather than any Cree place name, a reminder that the official toponym replaced older Indigenous designations.

Access to the lake depends on weather conditions and is most feasible during summer months when roads and waterways are passable. Visitors should prepare for isolated conditions and seek local advice about current accessibility.

The lake area supports diverse wildlife including fish and bird species adapted to cold water conditions of northern systems. This ecological role makes it an important habitat for northern aquatic species that thrive in remote environments.