The Yasu Argentino stream is a small water course located in the province of Misiones, Argentina, belonging to the Paraná river basin, where it flows.
It is born south of Puerto Iguazú International Airport, in the homonymous department. It takes a southwestern course first, then takes a southerly course, receiving minor tributaries until it drains into the Paraná north of the town of Puerto Bossetti. When arriving at the valley formed by the Paraná, this falls abruptly in the same, forming the jump Yasú.
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