El Cajón Dam is a dam in Capilla del Monte, Córdoba, Argentina. It was built on the course of the Dolores River, at about 910 m above mean sea level. The wall of the dam is 39 m tall and it creates a reservoir with a surface area of 1.45 - 1.8 km2 and a volume of 8000000 m3. The construction of El Cajón Dam started in the 1970s but the dam was finally finished and inaugurated in 1993. It is made of concrete and lies on granite terrain. The dam is used as a reservoir of fresh water, to regulate the flow of the river, for fishing (carp and silverside), sailing, canoeing, and windsurfing. The dam cost a total of approximately USD 800 million to construct.