Williston Lake is a reservoir created by the W. A. C. Bennett Dam which is located in the Northern Interior of British Columbia, Canada.

The lake fills the basin of the upper Peace River, backing into the Rocky Mountain Trench which is where the Parsnip and Finlay met at Finlay Forks to form the Peace.

The following rivers empty into the Williston Reservoir, in clockwise order from the Peace River outlet: Additionally, the following creeks empty into Williston Reservoir, in clockwise order from the Peace River outlet (this list is not comprehensive):[3] Williston Lake was created in 1968 by the building of the W. A. C. Bennett Dam on the Peace River, which flooded the aboriginal-territorial home of the Tsay Keh Dene First Nation.

[4] The reservoir was named after the Honourable Ray Gillis Williston, at the time the Minister of Lands, Forests and Water Resources.

This article about a location in the Interior of British Columbia, Canada is a stub.