Located in the Northeast region, it bathes states of Maranhão and Piauí. It has an important socioeconomic role because of the potential of its natural resources that provide aptitude for the development of countless activities: fishing and agropastoris, navigability, electricity, urban supply, leisure, among others.
The river rises from the foothills of Chapada das Mangabeiras, south of Piauí, which is currently preserved by the Parnaíba River Springs National Park. The river rises at an altitude of seven hundred meters, mainly from the confluence of three watercourses: Água Quente, on the border of Piauí with Maranhão, Curriola and Lontra, in Piauí. It travels about 1 450 km until its mouth in the Atlantic Ocean.
Before entering the Atlantic Ocean, Parnaíba forms a large, jagged delta - the only open-sea delta in the Americas and one of the three largest in the world.
The Parnaíba Delta is a major tourist attraction, attracting people from all over the world who are interested in eco-tourism.
Dunes in the Parnaíba River Delta