Douro

Douro (Port. dōˈrŏ) [key] or Duero Span. dōāˈrō, 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.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on Douro from Fact Monster:

  • Sierra de Gata - Gata, Sierra de Gata, Sierra de , mountain range, W Spain. Between the valleys of the Douro and ...
  • Trás-os-Montes - Trás-os-Montes Trás-os-Montes , former province of NE Portugal, comprising the ...
  • Iberian Mountains - Iberian Mountains Iberian Mountains , mountain system, extending c.250 mi (400 km) along the ...
  • Portugal: Land and People - Land and People The country is crossed by rivers rising in Spain and flowing to the Atlantic; among ...
  • Beira, former province, Portugal - Beira Beira , region and former province, N central Portugal, S of the Douro River. The old capital ...

See more Encyclopedia articles on: Spanish and Portuguese Physical Geography