description Amazon River Delta Overview
The Amazon River Delta is a vast estuarine system in northeastern Brazil where the Amazon River meets the Atlantic Ocean. It features an extensive network of waterways, islands, and mangrove forests that span hundreds of kilometers. Because the river discharges roughly 20% of the world's freshwater into the ocean, the delta significantly alters the salinity and ecology of the surrounding marine environment. It is a crucial habitat for diverse aquatic species, including river dolphins and sea turtles, and supports local communities reliant on its resources.
insights Ranking position
Amazon River Delta ranks #1 of 155 in the Delta ranking, ahead of Ganges-Brahmaputra Delta.
help Amazon River Delta FAQ
Is the Amazon River Delta a traditional delta?
Unlike typical deltas formed by deposited sediment branching outward, the Amazon's discharge is so massive that it creates an estuarine system featuring channels and islands stretching hundreds of kilometers into the Atlantic Ocean.
How much fresh water does the Amazon River discharge into the ocean?
The river discharges approximately 20% of the world's total freshwater input into the ocean. This immense outflow dilutes the ocean's salt content for hundreds of kilometers off the coast of Brazil.
What type of ecosystem is found in the Amazon River Delta?
The delta region features extensive networks of islands, waterways, and vast mangrove forests. The world's largest contiguous mangrove forest, the Marajó Island archipelago, sits directly in the river's mouth.
Where is the Amazon River Delta located?
The delta is located in northeastern Brazil where the Amazon River meets the Atlantic Ocean. It spans across multiple Brazilian states, including Amapá and Pará.
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