Chile
The diverse climate of Chile ranges from the world's driest desert in the north—the Atacama Desert—through a Mediterranean climate in the center, humid subtropical in Easter Island, to an oceanic climate, including alpine tundra and glaciers in the east and south. According to the Köppen system, Chile within its borders hosts at least ten major climatic subtypes. There are four seasons in most of the country: summer (December to February), autumn (March to May), winter (June to August), and spring (September to November).
The flora and fauna of Chile are characterized by a high degree of endemism, due to its particular geography. In continental Chile, the Atacama Desert in the north and the Andes mountains to the east are barriers that have led to the isolation of flora and fauna. Add to that the enormous length of Chile (over ) and this results in a wide range of climates and environments that can be divided into three general zones: the desert provinces of the north, central Chile, and the humid regions of the south.
Water resources management in Chile
Chile's rivers are generally short, running from the Andes in the East to the Pacific in the West. The most important rivers in Chile are the Loa River in the Northern Atacama desert, the country's longest river with a length of 420 km that has suffered pollution from copper mining; the Baker River in Patagonia, the country's largest river in terms of discharge that is the site of Chile's largest planned hydropower plant with a capacity of 2,400 Megawatts; the Biobío River, the country's second longest river that became famous for the construction of controversial Pangue Dam in 1996; the Maule River in the central part of Chile that is well known for its agriculture, including its irrigated vineyards, as well at the literature and poetry it has inspired; and the Maipo River that provides the capital Santiago with drinking water and is also a major source of water for irrigation.