The Rivière de l'Est is a river on the Indian Ocean island of Réunion.

It flows northeast from the southeast of the island, reaching the sea between the towns of Sainte-Anne and Sainte-Rose.

It is 21.2 km (13.2 mi) long.

[1] The Rivière de l'Est flows down the slopes of the shield volcano Piton de la Fournaise from an elevation of 720 metres (2,350 ft) above sea level.

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