In a dry land where almost everyone has their eye on their uphill neighbor’s water, the Andes are already seeing conflicts erupt as global warming changes water patterns.

Highlands outside of Cuzco, Peru, about 200 miles from Ica. A changing water regime as a result of global warming is already creating conflict throughout water-stressed Peru and other Andean countries. Photo by Icelight, flickr.By Barbara Fraser
For The Daily Climate ICA, Peru — Two decades ago, the strip of sand between the Pacific Ocean and the Andean foothills was empty except for the occasional fig or carob tree. But  the northern end of perhaps the world’s driest desert – a harsh and unforgiving clime —  is now the center of Peru’s export agriculture industry. Rising demand for irrigation and drinking water is draining the aquifer faster than it can recharge, and a scheme to channel more water from the Andean highlands, which receive seasonal rainfall, is pitting big agribusinesses on the coast against Quechua-speaking llama herders in the mountains. Experts say the conflict is just one sign of rising tensions over water use as supplies of the vital resource dwindle and shift with changes in climate. “Water belongs to the people who need it most, and we need it most,” says Gino Gotuzzo, of the Farmers Association of Ica, who grows asparagus and some other crops on about 60 acres of desert. Up the mountain, however, Quechua-speaking farmers say plans to channel runoff to coastal farms will dry up the spongy high-mountain wetlands where they pasture llamas and alpacas, ruining their livelihood. El Niño’s water refugees Peruvian officials brush aside the specter of “water refugees.” As supplies dwindle, they say, they can channel water from the highlands, where rain falls between October and April, or divert rivers that flow east to Amazonia, which receives more precipitation than its sparse population uses. Nevertheless, droughts associated with El Niño events in the 1980s and 1990s spurred increased migration from rural areas to cities in Peru, and the exodus from Brazil’s chronically drought-stricken northeast is one factor in that country’s Amazonian deforestation. …

Glaciers go, leaving drought, conflict and tension in Andes