6 páginas, 4 tablas, 7 referencias.The quality of the waters of the Guadiamar river and the El Partido and La Rocina streams are considered and the amounth of
the pollutants transported by the Guadiamar river during the dry and rainy weather evaluated.
The actual poor quality ofthe Guadiamar river water forbids their use to improve the hydrology status of the Dañana marshes.Peer reviewe