Lac des Bouillouses () or Llac de la Bollosa is a lake in Pyrénées-Orientales, France. At an elevation of 2017 m, its surface area is 1.49 km².Topographical map extract (in Géoportail).

It is an artificial lake, the 20-metre high dam of which was built between 1903 and 1910 as a key part of a hydro-electricity project in the Têt valley."Les Bouillouses", on les-pyrenees-orientales.com (in French).

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