Jacu

Jacu is a rapid on the Parnaíba River above Uruçuí, in the interior of northeastern Brazil. The Parnaíba flows north between the lands of Piauí and Maranhão, receiving tributaries from both sides. Rapids such as Jacu interrupt its course and distinguish the upper river from the more navigable stretches downstream. Along its banks, wooded country and seasonal waterways form part of the great basin that ultimately reaches the Atlantic.