San Juan River
River in Argentina
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The San Juan River is, together with the Jáchal, the most important river of the Argentine province of San Juan. Both join the Desaguadero/Colorado system that ends at the Atlantic Ocean. Wikipedia
Source: Calingasta River
Discharge: 1,978 ft³/s
Mouth: Desaguadero River
Length: 311 mi
Basin size: 39,906 km2 (15,408 sq mi)