It is a long, narrow, lake-expansion of the Back River.

It is part of the western Canadian Precambrian Shield.

Historically, Lake Beechey was the southernmost territory of Copper Inuit.

[1] The first European to explore the lake was George Back[2] and named by Sir John Franklin in honour of Frederick William Beechey.

This Kitikmeot Region, Nunavut location article is a stub.