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(Port. dō`ro͝o) or


(Span. do͞oā`rō), river, c.475 mi (765 km) long, rising in the Sierra de Urbión, N central Spain. It flows W across N Spain, then southwest to form part of the Spanish-Portuguese border before flowing W across N Portugal to the Atlantic Ocean at Pôrto. One of the longest rivers of the Iberian Peninsula, it drains most of the northern portion of the central plateau; the Tormes, Esla, and Pisuerga rivers are its chief tributaries. Silting, rapids, and deep gorges combine to make the Douro unnavigable. The middle Douro is extensively used for irrigation. Several hydroelectric power plants are along the river, and through an international agreement the power is used for irrigation and development. Grapes are the chief crop of the Douro valley, and the Douro estuary is the center of Portuguese wine trade.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(Duero), a river on the Iberian peninsula, with a length of 925 km (or, according to other sources, 938 km). The area of the river basin is 95,000 sq km.

The river originates in the Iberian Mountains in Spain, and in its upper and middle reaches flows through a deep valley and crosses the Old Castillian Plateau. Descending from the plateau, the Douro flows 110 km through one of Europe’s most splendid canyons, which is 200-500 m deep. The width of the river bed ranges from 30 to 40 m. Lower, in Portuguese territory, the Douro flows at first through a wide valley in mountainous and hilly areas, then through maritime lowlands, and finally into the Atlantic Ocean. The mouth of the Douro is an estuary, shallowed by a sandbar. Its main tributaries are the Pisuerga, Adaja, Esla, Tormes, and Támega. In winter and spring there are frequent violent floods, with water in the canyon rising up to 15-20 m, and flooding in the plains. The average flow of water at its mouth is approximately 700 cu m per sec, with a maximum of over 15,000 cu m per sec. The Douro is navigable for 200 km above its mouth. There is a reservoir and hydroelectric power station. The most important granaries of Spain are in the valleys of the Douro and Pisuerga. The Spanish cities Soria and Aranda de Duero and the Portuguese cities Pezo da Regua and Porto are situated on the Douro.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
* Adega Sao Nicolau: In Ribeira by the river Douro, this no nonsense restaurant serves the best cod cakes, besides chicken bordelaise and octopus fillets with rice.
Built on the hillside either side of the estuary of the River Douro, it is astonishingly beautiful and a delight to explore, with every turn down the maze of cobbled streets offering a surprising window into Porto life.
PORTO Spanning the River Douro on Portugal's north Atlantic coast, Porto is a working city that retains its old world charm.
De Oliveira, who started making films during the silent era with the docu "Labor on the River Douro," has directed 35 films since the age of 71.
THE river Douro cuts through gorges and winds below hillsides dotted with olives, almonds and vines.
In fact, the journeys described in two of these works took place in the first half of the 1980s: El rio del olvido: Viaje (1990) records a walking trip undertaken in August 1981 in the writer's home province and Cuaderno del Duero (1999) describes a journey made in May 1984 that followed part of the course of the River Douro through northern Spain.
Both occupy studios at 53 Rua do Aleixo, a typically unassuming office block designed by Siza in 1997, with breathtaking views across the river Douro, which has become the spiritual epicentre of modern Portuguese architecture (a bit like Foster and Rogers sharing the same premises).
(The map got lost somehow, but Andree, his wife, retraced it obligingly.) He regretted that he could not be in Sao Martinho de Anta to receive us and take us to one of his favorite spots, Sao Leonardo de Galafura, high above the River Douro.
Lined with traditional blue and green tiled houses with delicate wrought iron balconies, it turned out to be a stone's throw from the medieval Ribeira district that runs higgledy-piggledy down to the River Douro. The old town is a tortuously steep and.comes labyrinth of narrow alleys leading to the restaurants and bars that spill out on to its colourful quayside.
Sidestep the tourist traps along the River Douro; locals love the no-frills diners, like the Taberna Dos Mercadores - a softly-lit, bottlelined restaurant on the R.
Valenca do Minho are highlights of a day in the northern Minho region u Fully escorted by a friendly, experienced tour manager u Seven nights' three-star half-board hotel accommodation, return flights and transfers Tour highlights u Discover Portugal's second city Oporto, above the River Douro u Pay a visit to a port wine lodge u Journey along the Costa Verde u Explore the Vinho Verde vineyards and discover historic Ponte de Lima's ancient Roman bridge u Guided visits to Viana do Castelo and The Spirit of Krakow 5 days from PS439 Flying direct from Bristol, June to October 2016, April to October 2017 The treasures and preserved medieval glories of Poland's former Royal capital unveiled, and a moving visit to poignant Auschwitz.