If youâre planning a kayak trip to FutaleufĂș River, understanding the river level is one of the most important parts of the puzzle. Unlike many free-flowing rivers, the FutaleufĂș is directly affected by dam releases upstream in Argentina. That means the water can change fast, sometimes within hours, and what looks like a perfect level in the morning can feel very different by the afternoon. This guide breaks down how to read the FutaleufĂș river gauge, how dam releases affect