The Galaube Lake is a reservoir on the Rougeanne River (also known as "l'Alzeau"), located between the Tarn (Arfons) and Aude (Lacombe) regions in Occitanie, France.

The idea of constructing a dam on the Rougeanne River dates back to the 18th century with the aim of improving the water supply for the Canal du Midi.

The La Galaube Dam itself was built from 1999 to 2001 at an altitude of 720m by the "Institution interdépartementale pour l'aménagement hydraulique de la Montagne Noire" (IIAHMN), established in 1948 among the departments of Aude, Haute Garonne, and Tarn.

[1][2] With a cost of 100 million francs, it supplies drinking water to several departments (Aude, Tarn, Haute-Garonne).

Various monitoring devices, such as piezometers and tacheometers, ensure the dam's ongoing safety and performance.