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Dão () is a 
Portuguese
Portuguese may refer to:
* anything of, from, or related to the country and nation of Portugal
** Portuguese cuisine, traditional foods
** Portuguese language, a Romance language
*** Portuguese dialects, variants of the Portuguese language
** Port ...
river that originates in the plateau regions of Trancoso-Aguiar da Beira in the Eirado parish, Aguiar da Beira Municipality, Guarda District
The district of Guarda ( pt, Distrito de Guarda ) is located in the Centro Region of Portugal, except Vila Nova de Foz Côa, which is in the Norte Region. The district capital and most populous city is Guarda.
Municipalities
The district cont ...
, and varies between in elevation.
It flows in a general northeast–southwest direction, passing through Barragem de Fagilde and crosses or demarcates the limits of the councils of Aguiar da Beira, Penalva do Castelo, Mangualde
Mangualde () is a municipality in the subregion of Dão-Lafões (historical Beira Interior), central region of Portugal. The population in 2011 was 19,880, in an area of 219.26 km2.
History
The region of Mangualde has been a crossroads of m ...
, Viseu
Viseu () is a city and municipality in the Centro Region of Portugal and the capital of the district of the same name, with a population of 100,000 inhabitants, and center of the Viseu Dão Lafões intermunipical community, with 267,633 inhabi ...
, Carregal do Sal
Carregal do Sal () is a municipality in Viseu District in Portugal. The population in 2011 was 9,835, in an area of 116.89 km2.
The present mayor is Atílio dos Santos Nunes, elected by the Social Democratic Party. The municipal holiday is th ...
, Nelas
Nelas () is a municipality located in the Centro Region of continental Portugal. The population in 2011 was 14,037, in an area of 125.71 km².
History
Settlement of the territory of Nelas dates back to the settlement by Neolithic and Stone a ...
, Tondela, and Santa Comba Dão. It empties into the Mondego River
The Rio Mondego () or Mondego River is the longest river entirely within Portuguese territory. It has its source in Serra da Estrela, the highest mountain range in mainland Portugal (i.e. excluding the Portuguese islands). It runs from the ...
, in the limits of the councils of Santa Comba Dão, Mortágua, and Penacova, after covering about .
Its granite-sloped valley is situated in the " Região Demarcada do Dão", where the Vinho do Dão wines are produced.
References
Rivers of Portugal {{portugal-river-stub