It is part of the Gulf of Guayaquil-Tumbes mangroves Sanctuary and its currents, sediments, and tides strongly influence the geomorphology of the area.Pollution is a problem in this part of the river, as people from both countries discharge their waste into the canal.In 1998, during El Niño, the river changed its course, moving 1 square kilometre of land into its eastern margin.Ecuadorians took advantage of this situation, saying that the river is the natural border marker and therefore gives them rights in the affected area.You can help Wikipedia by expanding it.This article related to a river in Peru is a stub.
View of the river; the boats are on Ecuadorian territory, while the Peruvian side of the border (to the right) is uninhabited
View of Zarumilla River from international bridge linking Ecuador and Peru in Huaquillas
