The Largest Reservoirs in Brazil That Hold Billions of Cubic Meters and Support Millions in the Northeast

Written by Fabio Lucas Carvalho

Published on 15/11/2025 at 16:28

Maiores açudes do Brasil – concentra 70 mil açudes e abriga os maiores reservatórios do Brasil, fundamentais para abastecimento e irrigação

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The Northeastern Region Brings Together Thousands of Reservoirs and Houses the Largest Reservoirs in the Country, Structures That Store Billions of Cubic Meters and Sustain Agriculture, Fishing, Livestock Raising, and Domestic Use.

The construction of reservoirs ensures water for regions that face long periods of drought, especially in the Northeast. The region has about 70,000 reservoirs and forms the second-largest concentration in the world, behind only India.

These spaces accumulate water from rivers and allow various communities to maintain their essential activities even during droughts.

In this scenario, the largest reservoirs become essential for supplying, production, and survival for thousands of families.

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Reservoirs That Sustain Agriculture, Fishing, and Domestic Consumption

The reservoirs function as structures created to dam water and provide water stability. Communities use this resource for irrigation, fishing, livestock raising, and domestic use. The presence of the largest reservoirs strengthens water security throughout the year and helps keep small producers active even during severe drought periods.

The Largest Reservoirs in Brazil

The list of the largest reservoirs in the country highlights the significance of the Northeast in the national water infrastructure. The Castanhão, located in Ceará, leads with a capacity of 6.7 billion m³ of water.

Next is Armando Ribeiro Gonçalves, in Rio Grande do Norte, with 2.4 billion m³. The state of Ceará also houses the Orós reservoir, which holds 2.1 billion m³.

The Banabuiú, also in Ceará, totals 1.7 billion m³ and reinforces the state’s position among the main water storage hubs in the country.

In Paraíba, the Coremas Mãe d’água set completes the list with a capacity of 1.4 billion m³. These large reservoirs ensure supply, irrigation, and support for the economic activities of entire communities, demonstrating the strategic importance of reservoirs for all of the Northeast.

The Largest Reservoirs in Brazil That Hold Billions of Cubic Meters and Support Millions in the Northeast

The Northeastern Region Brings Together Thousands of Reservoirs and Houses the Largest Reservoirs in the Country, Structures That Store Billions of Cubic Meters and Sustain Agriculture, Fishing, Livestock Raising, and Domestic Use.

Reservoirs That Sustain Agriculture, Fishing, and Domestic Consumption

The Largest Reservoirs in Brazil

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