Marapanim River

The Marapanim River (Rio Marapanim) is a river of the state of Pará, Brazil.

Course
The Marapanim River rises in the municipality of São Francisco do Pará. It flows in a generally north direction, and enters the Atlantic Ocean just past Marapanim, Pará, which lies on its left bank. The eastern side of the Marapanim Bay before Maiandeua Island is protected by the 30179 ha Maracanã Marine Extractive Reserve, created in 2002. Further south the eastern side is protected by the Cuinarana Marine Extractive Reserve. The western side is protected by the 26465 ha Mestre Lucindo Marine Extractive Reserve, created in 2014.

Environment
At its mouth the river is mainly bordered by mud flats. The area around Rio Marapanim has a low population, with about 18 people per square kilometre. The area has a monsoon climate. The average temperature is 24 C. The hottest month is September, with 25 C and the coldest month is January, with 22 C. Average annual rainfall is 3146 mm. The wettest month is March, with 699 mm and the driest month is October, with 12 mm.