Paddling near União, Piauí

União sits in the Médio Parnaíba region of Piauí, where the Rio Parnaíba — one of the great rivers of northeastern Brazil — runs just 2 km from the city. The Parnaíba is the marquee water here, a broad, largely flatwater river that draws canoeists and kayakers along its banks and sandbars. The Rio Poti, roughly 48 km away, adds another paddling option in the region.