[2] The cities of Témiscouata-sur-le-Lac, Dégelis and Saint-Juste-du-Lac are located on this lake.

[6] The Petit Témis Interprovincial Bicycle Path, runs from Rivière-du-Loup, Quebec to Edmundston, New Brunswick, following an abandoned railway line along the lake.

[7] The lake is theorized to be the inspiration for the nearby parish of Saint-Louis-du-Ha!

One explanation suggests the archaic French word haha, here meaning an unexpected obstacle or abruptly ending path, as the lake is an extremely long and particularly formidable obstacle to travel.

You can help Wikipedia by expanding it.This article related to a lake in Canada is a stub.