Dão (Portuguese pronunciation: [dɐ̃w]) is a Portuguese river that originates in the plateau regions of Trancoso-Aguiar da Beira in the Eirado parish, Aguiar da Beira Municipality, Guarda District, and varies between 714 and 757 metres (2,343 and 2,484 ft) in elevation.[1][2]

Dão river
Map
Native nameRio Dão (Portuguese)
Physical characteristics
SourceEirado
 • locationAguiar da Beira
 • coordinates40°47'09.4"N 7°29'52.2"W
 • elevation750 m
MouthMondego River
 • location
Foz do Dão, Santa Comba Dão
 • coordinates
40°20'27.4"N 8°10'51.2"W
 • elevation
110 - 124,7 m
Basin size1377 km2
Basin features
Tributaries 
 • leftCarapito stream
 • rightCoja stream, Sátão River, Criz River

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, Viseu, Carregal do Sal, Nelas, Tondela, and Santa Comba Dão. It empties into the Mondego River, in the limits of the councils of Santa Comba Dão, Mortágua, and Penacova, after covering about 100 kilometres (62 mi).

Its granite-sloped valley is situated in the "Região Demarcada do Dão", where the Vinho do Dão wines are produced.[3]

Low water level in Dão river
Dão River at Santa Comba Dão

References

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  1. ^ "Percurso do Dão – Início Nascente do rio Dão – Turismo Viseu Dão Lafões" (in European Portuguese). Retrieved 2022-01-18.
  2. ^ "Nascente Rio Dão | Freguesia de Eirado". www.freguesiadeeirado.com. Retrieved 2022-01-18.
  3. ^ "Comissão Vitivinícola Regional do Dão - The Wines". www.cvrdao.pt. Archived from the original on 2014-07-25. Retrieved 2022-01-18.