IGUACU FALLS

Additional reading Marie Robinson Wright, The Falls of Iguazu, National Geographic, August 1906, pp. 45660; and Edouard Bailby, The Iguacu Falls: Cascading Wonder of the Subtropical Forest, UNESCO Courier, 48:4043 (November 1995). Iguau Falls on the Iguau River at the Argentina-Brazil border. R. Manley/Superstock Iguau River Iguau Falls on the Iguau River at the Argentina-Brazil border. also spelled Iguass, Portuguese Rio Iguau, Spanish Ro Iguaz, river flowing through Santa Catarina and Paran states in southern Brazil. The Iguau is formed by headstreams rising in the Serra do Mar near Curitiba. It winds generally westward through the uplands for about 820 miles (1,320 km) before joining the Paran River at the point where Argentina, Brazil, and Paraguay meet. It forms a small portion of the Brazilian-Argentine border. Although sections of the river are navigable, it is known chiefly for the spectacular Iguau Falls (see photograph). Hydroelectric plants are located on the river at the Segredo, Osorio, and Santiago falls.