La Grande Plée Bleue is a peat bog located in Lévis in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.

With an area of 15 km2 (5.8 sq mi), it is one of the largest wetlands in all of eastern Quebec.

[1] The plée form is possibly a phonetic variant of the feminine term prée, in the sense of prairie.

Indeed, the hesitation between r and l which dates back to the 16th and 17th centuries is widely attested in documents from New France.

The blue color probably alludes to the presence of blueberry fields.