Lac de Castet is a lake in Pyrénées, Pyrénées-Atlantiques, France. At an elevation of 423 m, its surface area is 0.4 km².

Lac de Castet
Lac de Castet is located in Pyrenees
Lac de Castet
Lac de Castet
LocationPyrénées, Pyrénées-Atlantiques
Coordinates43°4′17″N 0°25′8″W / 43.07139°N 0.41889°W / 43.07139; -0.41889
Typereservoir
Primary inflowsGave d'Ossau
Basin countriesFrance
Max. length1.2 km (0.75 mi)
Max. width0.44 km (0.27 mi)
Surface area0.4 km2 (0.15 sq mi)
Surface elevation423 m (1,388 ft)
Islandsnumerous islets