The 43-meter-high dam, opened in 1973, is located between the mouth of the Ocreza River and the Portas de Ródão. Fishing, swimming, windsurfing, skiing, sailing, jet skiing, and motorboating are permitted.

Downstream from Vila Velha de Ródão, the Portas de Ródão (Ródão Gates) is an imposing geological formation where the Tagus River breaks between two steep walls (approximately 170 meters high) into a deep lake, carved by a supposed ancient waterfall that gradually disappeared until the river reached the lake's level. Besides being home to the largest colony of griffon vultures in the country, it is a privileged location for fauna and avifauna research, where 116 bird species can be observed, many of them considered endangered and some rare.

The Ocreza River stretches for about eighty kilometers, from its source in the Serra da Gardunha to its confluence with the Tagus River. It is a periodic river with several tributaries.

A concrete dam with buttresses built in the 1980s. Its purpose is to generate hydroelectric power from the Ocreza River. Fishing, swimming, and sailing are permitted.