Río Negro is the main river of Patagonia in terms of the size of its drainage basin, its associated agricultural produce and population living at its shores. In eastern Patagonia it is also the largest by flow rate. The river flows through the Argentine province of Río Negro which is named after it. Its name comes from the literal translation of the Mapuche term Curu Leuvu, although the water is more green than black. Formerly, it was also known as "river of the willows" because of the big number of weeping willows that grow along the bank. It is 635 km in length.
Rio Negro near the mouth, seen from its northern bank, between the cities of Viedma, Río Negro and Carmen de Patagones, Buenos Aires
Viedma is the capital and fourth largest city of the Río Negro Province, in northern Patagonia, Argentina. The city has approximately 62,000 inhabitants (2022), and is located on the southern margin of the Negro River, about 30 kilometres off the Atlantic Coast, and 960 km from the city of Buenos Aires on the National Route 3.
Bridge over the Río Negro linking the twin cities.