Flowing some 640 kilometres through the heart of Buenos Aires Province, the Río Salado is one of Argentina's most significant lowland river systems, draining a basin of roughly 170,000 square kilometres — more than half the province's total area. Originating at El Chañar Lake on the Santa Fe border at an elevation of about 40 metres above sea level, the river winds generally southeast through the Pampean plain, passing the cities of Junín, Roque Pérez, and General Belgrano before emptying into Samborombón Bay, part of the Río de la Plata estuary on the Atlantic Ocean. The river's mouth sits approximately 170 kilometres south of Buenos Aires city. As a classic lowland Pampean river, the Salado is a slow-moving, meandering waterway that connects a network of wetlands, lakes, and lagoons along its course, creating a rich and diverse fishery that draws anglers from across the region.