- Tucuruí is a city located in the state of Pará, Brazil. It is the largest municipality in the state and is one of the most important economic centers in the region. Tucuruí is known for its hydroelectric power plant, the Tucuruí Dam, which is one of the largest in the world. The city is also home to the Rio Tocantins, which offers opportunities for water sports and fishing. Tucuruí has a population of around 100,000 people and offers a range of amenities, including schools, hospitals, shopping centers, and a bustling downtown area.