Guadalquivir (ancient Baetis), is rising in the
Sierra de Cazorla in SE Spain. It flows 602 km (374 mi), generally
southwest, past Córdoba and Seville to Sanlúcar
de Barrameda, where it empties into the Gulf of Cádiz,
an arm of the Atlantic Ocean. In its middle course it flows through
a populous fertile region at the foot of the Sierra Morena, where
it is used extensively for irrigation. The area has a rich variety of
plant life. For the 64 km (40 mi) between the town of Coria del Río
and the mouth of the river, the Guadalquivir traverses a region of tidal
marshes called Las Marismas.
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