Sediments in Estuary of Bahía Blanca, Argentina38.7S 62.2W
The sediments in the Estuary of Bahía Blanca, in Buenos Aires Province, Argentina, come from the Arroyo Napostá (Naposta Stream). It is a stream whose watershed is located in Sierra de la Ventana, about 120 km north east of the city of Bahía Blanca. Unfortunately Napostá is heavily contaminated distally, even before reaching the city, probably due to techniques of fertilization carried out in the areas which form its watershed.
Bahía Blanca is a city located in the south-west of the province of Buenos Aires, Argentina, by the Atlantic Ocean. The city has an important sea port with a depth of 45 feet (15 mt), kept constant upstream almost all along the length of the bay, where the Naposta Stream drains. Bahía Blanca means “White Bay”. The name is due to the typical colour of the salt covering the soils surrounding the shores.