The dozens of fires burning in and around Paraguay in South America are probably agricultural fires. The practice of burning to clear land is common in South America, particularly between July and October. This Moderate Resolution Imaging Spectroradiometer (MODIS) image was taken on September 30, 2003, just as the burning season was beginning to wind down. Fires are represented as red dots in this true-color image taken by the Aqua satellite.
Source: Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC

Satellite Image, Photo of Paraná and Paraguay Rivers, Argentina and Paraguay

Paraná River, Argentina and Paraguay February 1984 The effects of the rainy season in south-central South America are vividly documented in this near-vertical photograph of the confluence of the Paraná and Paraguay Rivers northeast of the Argentine town of Corrientes. The Paraná River flows westward; after merging with the Paraguay River, it begins to flow almost due south. Both rivers are sediment laden and appear to be out of their normal watercourses, thereby producing flooding conditions. The Paraguay River is characterized by the widely varying, meandering main channel; many oxbow lakes; and a tan sediment load. The Paraná River has a smaller floodplain, a deeper channel, and a reddish-brown sediment load. As the two rivers merge and begin to flow southwestward, their individual sediment patterns do not mix readily, a common occurrence in which rivers with different densities of suspended particles tend to retain their individual color characteristics for many miles downstream. The Paraná River, which flows approximately 2000 miles (3200 kilometers), is the second largest drainage system in South America; the Amazon River is the largest. An old river channel south of the Paraná River parallels the present river channel. This much older stream channel seems to flow toward the city of Corrientes (estimated population of 200 000), the commercial center for this rich agricultural region of northeast Argentina and southwest Paraguay..
Source: National Aeronautics and Space Administration - NASA/JPL/NIMA

Satellite Image, Photo of Yguazu River Reservoir, Paraguay

Yguazu River Reservoir, Paraguay Winter/Spring 1997 The light colors of the overall picture indicates that most of the landscape in this region of southeast Paraguay has been cleared of trees in favor of intensive agricultural activities. Most of the croplands are used to grow cotton and soybeans, while pasture grasses are used to raise cattle. This region of Paraguay, known as the Paranena, is a mixture of rolling hills, plateaus, and broad valleys. The dark, irregular shaped feature in the middle of the image is a reservoir created by building a dam on the Rio Yguazu (dam is on eastern end of the reservoir). Several small, forested areas are visible north and south of the Reservoir (uniform dark green patches). These forests occur mainly along the river valleys and wetlands of the Rio Monday (south) and Rio Acaray (north of the reservoir)..
Source: National Aeronautics and Space Administration - NASA/JPL/NIMA