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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.



(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.

References in periodicals archive ?
The information below was used in the analysis of Douro SME:
When it was completed in 1886, it was the longest bridge of its kind in the world and carried trains and pedestrians from Porto's main heart to the port cellars of Vila Nova de Gaia on the southern bank of the Douro.
Team Abu Dhabi's Rashed Al Qemzi delivered a polished and professional performance to finish fourth and clinch the UIM F2 World Championship title inSunday's Grand Prix of Portugal on the Douro River.
Built into terraced vineyards overlooking the lazy Douro River, the property is surrounded on all sides by centuries-old port wine and its proud producers, who like a heavy pour just as much as I do.
Our lunchtime visit to a small family bakery and local winery in Favaios, deep in the Douro Valley, was one of many occasions when you felt like an honoured guest, not a tourist.
Sloshing through alcoholic gazpacho is one of the activities offered by Six Senses Douro Valley in late September, although year-round, there's good reason to visit one of the world's oldest wine regions.
Asda's Douro is made from touriga franca, touriga nacional and tinta roriz (tempranillo) grapes which are also used in the production of the region's better known offering, Port.
The Douro (that's what Lamassu's Bitcoin ATM model is called) accepts more than 200 currencies and, according to the company, generates anywhere from $12,000 to $36,000 per unit per year for the ATM operators, thanks to the 5.
The autumn program includes two tours to classic wine regions: Bordeaux and the Douro Valley in Portugal.
Le tournage de son nouveau court metrage, egalement confirme par la societe de production [beaucoup moins que]O som e a furia[beaucoup plus grand que], va se derouler a Porto, la ville oE il avait debute dans les annees 1930 avec son premier film, [beaucoup moins que]Douro, travail fluvial[beaucoup plus grand que], un documentaire muet sur les rives du fleuve Douro.
Second on the list was Tedo River Vineyards - Douro Valley, Portugal.