Salado River (Argentina) under the name of Juramento River at the Andes range, from thaw and captured precipitations of the high Acay and Cachi mountains in the Salta Province, near Catamarca Province. The Cabra Corral Dam regulates its flow, and deviates some of it for irrigation. When the river enters the Gran Chaco plains it forms several arms in a broad riverbed only partially occupied. The river then enters the Santiago del Estero Province from the north, near the border with the Tucumán Province, receiving the name of "Salado". The Salado and the Dulce River ("Sweet River") south to it, run diagonally in
Ojos del Salado reports indicate the absence of glaciers on Ojos del Salado. Permafrost exists on the mountain and its melting nourishes several lakes; one lake fed by a creek lies at altitude. Ojos del Salado is an active volcano, but the question of whether it should be considered "currently" (or "historically") active is arguable. According to the Smithsonian Institution's Global Volcanism Program, the most recent known eruption was about 1,300 years ago, with a large margin of uncertainty. However, there is also some evidence for a minor ash emission in 1993, which would definitely qualify the volcano as historically active. The presence