Definition: Harrington Lake, or Lac Mousseau as it is known in French, is the official summer or country residence of the Prime Minister of Canada. Harrington Lake is in Gatineau Park on the Quebec side of the Ontario - Quebec border, near Ottawa.
Harrington Lake was first used as a country residence by John Diefenbaker.
Harrington Lake was first used as a country residence by John Diefenbaker.

