Guadalquivir

The Guadalquivir is the fifth-longest river in the Iberian Peninsula and the second-longest river located entirely in Spain by length. The Guadalquivir River is Spain's sole significant navigable river. It is currently navigable from the Gulf of Cádiz to Seville, but it was once navigable all the way to Córdoba. The river is 657 kilometers long and drains around 58,000 square kilometers. It begins in the Cazorla mountain range (Jaén), flows through Córdoba and Seville, and finally reaches the sea near the fishing community of Bonanza in Sanlcar de Barrameda, where it pours into the Atlantic Ocean's Gulf of Cádiz.

"Las Marismas" refers to the marshy lowlands at the river's mouth. The Doana National Park reserve is bordered by the river. Guadalquivir's contemporary name is derived from the Arabic al-wd l-kabr, which means "the great river".

In Classical and pre-Classical eras, the Guadalquivir was known by several different names. The native population of Tartessians or Turdetanians called the river Certis (Kertis) and Rherkes, according to Titus Livius (Livy), The History of Rome, Book 28. It was dubbed "the river of Tartessos" by Greek geographers after the city of the same name. Baetis was the name given to it by the Romans (which was the basis for name of the province of Hispania Baetica).

Length: 408 miles