The Beaverhill Lake Group is a geologic unit of Middle Devonian to Late Devonian (late Givetian to Frasnian) age in the Western Canada Sedimentary Basin that is present in the southwestern Northwest Territories, northeastern British Columbia and Alberta.

[1] The Beaverhill Lake Group is present beneath the plains of the southwestern Northwest Territories, northeastern British Columbia and Alberta.

[7] The formations of the Beaverhill Lake Group were deposited in an embayment that extended from an open ocean in the present-day Northwest Territories in Canada, to North Dakota in the United States.

An extensive reef complex called the Presqu'ile Barrier had developed across the mouth of the embayment, blocking it from the open ocean and restricting the inflow of sea water.

Low water levels and excessive evaporation led to the deposition of the anhydrite-rich Fort Vermillion Formation at the base of the group in northern areas.