Lac de Castillon
A view of the Lac de Castillon's northern shores at Saint-André-les-Alpes
Lac de Castillon
Location	Alpes-de-Haute-Provence
Coordinates	43°54′N 6°32′E / 43.900°N 6.533°E / 43.900; 6.533
Type	Artificial
Primary outflows	Verdon
Catchment area	655 km2 (253 sq mi)
Basin countries	France
Max. length	8 km (5.0 mi)
Surface area	5 km2 (1.9 sq mi)
Max. depth	100 m (330 ft)
Water volume	150,000,000 m3 (5.3×109 cu ft)
Surface elevation	880 m (2,890 ft)

The Lac de Castillon (English: Lake of Castillon) is a reservoir in the Alpes-de-Haute-Provence department, Southeastern France. At an elevation of 880 m (2,890 ft), the lake's surface area is 5 km² (1.9 sq mi). The Castillon dam holds 150,000,000 m³ (5.3×10⁹ cu ft) of water.

Upon its creation in 1948, the lake submerged the former village of Castillon (after which it was named), the commune of which was then merged with Castellane.

The Lac de Castillon houses a military testing facility to the southwest of Saint-Julien-du-Verdon, operated by the Direction générale de l'armement (DGA) of the Ministry of Armed Forces.^[1]

• 
  General view, June 2006
• 
  Aerial view, July 2015
• 
  DGA testing facility