Lac de Puyvalador, Reservoir in Puyvalador, France

The Lac de Puyvalador is an artificial lake in the Capcir area of the French Pyrénées, on the territory of Formiguères, Puyvalador and Réal at 1,418 m altitude. It is formed by a dam on the Aude and its tributary the Galbe; the dam is 160 m long and 39 m high, and the lake covers 90 ha with a maximum depth of 11 m.

The lake was created as a reservoir to store water and generate electricity for the surrounding area. Over time it became a place for outdoor recreation, drawing hikers, anglers, and families from nearby villages.

A marked loop trail starts from the village of Réal and goes around the lake, making it a good option for families and casual walkers. In winter the lake can freeze and snow covers the surrounding area, so conditions change significantly with the season.

The dam that created the lake, split between Puyvalador and Réal, is 160 metres long and up to 39 metres high, holding back ten million cubic metres of water. The reservoir was built in 1929 to supply electricity to Escolobre. In 2019 EDF Renouvelables announced a project to install floating photovoltaic panels on the lake's surface.