The lower course of the Desaguadero is known as the Salado because of the .brackish character of its water.
The largest of the rivers through which Argentina drains into the Plata system are the Pilcomayo, which rises in Bolivia and flows south-east along the Argentine frontier for about 400 m.; the Bermejo, which rises on the northern frontier and flows south-east into the Paraguay; and the Salado del Norte (called Rio del Juramento in its upper course), which rises on the high mountain slopes of western Salta and flows south-east into the Parana.
region there are many small streams, flowing into the La Plata estuary and the Atlantic; most of these are unknown by name outside the republic. The largest and only important river is the Salado del Sud, which rises in the north-west corner of the province of Buenos Aires and flows south-east for a distance of 360 m.
Other river ports, of less importance, are Concordia on the Uruguay river, San Nicolas and Campana on the Parana river, Santa Fe on the Salado, a few miles from the Parana, the city of Parana on the Parana river, and Gualeguay on the Gualeguay river.
In Camaguey province the Jatibonico del Sur; in Oriente the Salado, a branch of the Cauto; in Santa Clara the Sagua la Grande (which is navigable for some 20 m.