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)