The park is in the lower reaches of the Rio Negro branch of the Amazon. This branch is black with the organic matter picked up by the river. It has white-sand beaches during the dry season and flooded forest during the wet season. The streams turn into a 'ria' lake in the wet season, flooding huge areas of land, typical of all large rivers in the Amazon region. The site contains the nine-tier waterfall of the Carabinani River.