University of Arizona
Plata River Basin Map
View a map of the Plata River basin, which is made up of the Parana-Paraguay and Uruguay River systems. Includes a short description of the region.
American Museum of Natural History
American Museum of Natural History: Pacu O Logy Card
Flip this interactive OLogy card to find questions and answers, fast facts, and other bite-size pieces of information to help you understand important characteristics of the South American pacu, a freshwater fish.
Encyclopedia Britannica
Encyclopedia Britannica: Parana River
This site provides some brief information about the Parana River.
Encyclopedia Britannica
Encyclopedia Britannica: Uruguay River
Basic information on the Uruguay River in South America.