The Paraná River, Brazil
The Paraná River (Río Paraná in Spanish, Rio Paraná in Portuguese) is the second longest river in South America, running through Brazil, Paraguay and Argentina over a course of some 2,570 kilometers (1,600 miles).
This length increases to 3,998 km (2,484 miles) if the distance is counted from the headwaters of the Paranaiba River in Brazil. It is considered second in size only to the Amazon River among South American rivers.
The section of the Paraná River visible in the image is shortly upstream from its confluence with the Iguazu River and the Itaipu dam, the largest hydroelectric power station in the world.
In fact, this massive, shallow reservoir was created by the dam. By opening the full image and zooming in, you can confirm that the waters are wide but not deep.
We can also see the great amount of agriculture in the area. The crops grown in this region are mainly coffee, though there is also some rice and cotton.
Some sediments are visible in different parts of the river, perhaps caused by farm runoff.