Sediments in Lagoa dos Patos, Southern Brazil31.1S 51.4W
Sediments give a brown color to the Lagoa dos Patos (below), meaning “Lagoon of the Ducks” in English, located in the state of Rio Grande do Sul, in southern Brazil. It the second largest lagoon in Latin America and the biggest in Brazil, with a length of 174 miles (280 km), a maximum width of 44 miles (70 km), and a total area of 3,803 sq. mi. (9,850 km).
The lagoon is separated from the Atlantic Ocean by a sandbar about 5 miles (8 kilometers) wide. The navigable São Gonçalo Channel, which enters Lagoa dos Patos near the town of Pelotas, connects Lagoa dos Patos to Lagoa Mirim to the south. The Rio Grande, at the south end of Lagoa dos Patos, forms the outlet to the Atlantic.