Campilhas Reservoir

Completed in 1954, the large Campilhas dam lake can be used to produce electricity, supply drinking water and maintain an irrigation network. Due to repeated droughts, the lake can no longer recover the levels of its creation.

The Campilhas dam (Portuguese Barragem de Campilhas) is located in the Alentejo region of Portugal in the Setúbal district. It dams the Campilhas, a left (western) tributary of the Sado to a reservoir (port. Albufeira da Barragem de Campilhas). The small town of Cercal do Alentejo is located about five kilometers southwest of the dam.
The project to build the dam began in 1941. Construction was completed in 1954. In addition to the drinking water supply, the dam is also used for irrigation. It is owned by the Associação de Regantes e Beneficiários de Campilhas e Alto Sado.[1]
Source de.wikipedia.org/wiki/Talsperre_Campilhas

The reservoir had very little water and it was on the east side to see a way that we have gone (see also highlight end of the abbreviation)