The purpose of this paper is to analyze the guardianship of the Amazonian water resources in the Amazon Cooperation Treaty. Its important to review the Treaty's 4th and 5th articles , considering the international drainage basin theory, created by the International Law Association, in 1966, widely adopted by international law with the Convention on the Law of the Non-navigational Uses of International Watercourses (UN, 1997).
Amazon Cooperation Treaty; water resources; international law