There are two separate reservoirs along this section of the Rio Limay in northern Patagonia. Ezequiel Ramos Mexia (bluish feature) is the large reservoir in the center of the image; the smaller Arroyito Reservoir is farther downstream (northeast) on the Rio Limay. The "Ramos Mexia" Reservoir, also known as "El Chocón", was constructed to serve multiple purposes such as flood control, hydroelectric power, provide water for irrigation, and for sports fishing and recreation. The city of Neuquen, a regional center for petroleum exploration, is in the Limay valley at the right edge of the frame. Although the surrounding region is arid with xerophilic vegetation and shrubby bushes, floodplains of many rivers and streams support agriculture. Agricultural field patterns are visible in the valleys in this picture.
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