Itapecuru River, Major river system in Maranhão, Brazil
The Itapecuru River is a major waterway in Maranhão that flows northward from its source in Serra do Itapecuru toward Baía do Arraial. The river cuts through varying landscapes and shapes the region's geography in significant ways.
During colonial times, the river served as the main transportation route for cotton exports from inland areas to the port of São Luís. This early importance shaped how communities developed along its banks.
The river's name comes from Tupi words meaning stone, path, and influence, reflecting deep indigenous roots in the region. You can see this connection today in how locals refer to their landscape and the names of surrounding communities.
The river supplies drinking water to twenty municipalities across the state, with the majority of São Luís residents depending on it through their water systems. When visiting the area, keep in mind that the waterway remains central to how the region manages its water resources.
At Mirador State Park, three different biomes meet and create a rare natural transition zone. This large protected area preserves the river's headwaters and reveals how diverse a single river region's ecosystems can be.
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