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121-561: The Futaleufú River , located in northern Patagonia , is one of two rivers that cross the 5,308 kilometres (3,298 mi) Argentina–Chile border . Its headwaters can be found in the glacial snow melt of the UNESCO protected Los Alerces National Park in Argentina. The river gorge drops as low as 1,700 metres (5,600 ft) below the surrounding glaciated peaks. The name Futaleufú is an indigenous Mapuche word meaning "Big River". Locals refer to

242-468: A de jure sovereignty over the area. In 1669, the district around Puerto Deseado was explored by John Davis and was claimed in 1670 by Sir John Narborough for King Charles II of England , but the English made no attempt to establish settlements or explore the interior. The first European explorers of Patagonia observed that the indigenous people in the region were taller than the average Europeans of

363-813: A dissected topography . The Antarctic Plate started to subduct beneath South America 14 million years ago in the Miocene, forming the Chile Triple Junction . At first, the Antarctic Plate subducted only in the southernmost tip of Patagonia, meaning that the Chile Triple Junction was located near the Strait of Magellan . As the southern part of the Nazca Plate and the Chile Rise became consumed by subduction,

484-427: A hierarchical pattern . Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called a watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation ,

605-513: A Patagonian landscape; the presence of austral parakeets ( Enicognathus ferrugineus ) as far south as the shores of the strait attracted the attention of the earlier navigators, and green-backed firecrowns ( Sephanoides sephaniodes ), a species of hummingbird , may be seen flying amid the snowfall. One of the largest birds in the world, the Andean condor ( Vultur gryphus ) can be seen in Patagonia. Of

726-437: A common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as a sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into

847-419: A derivation meaning "land of the big feet". However, this etymology is questionable. The term is most likely derived from an actual character name, "Patagón", a savage creature confronted by Primaleón of Greece, the hero in the homonymous Spanish chivalry novel (or knight-errantry tale ) by Francisco Vázquez. This book, published in 1512, was the sequel of the romance Palmerín de Oliva ;it was much in vogue at

968-549: A difficult winter at what he named Puerto San Julián before resuming its voyage further south on 21 August 1520. During this time, it encountered the local inhabitants, likely to be Tehuelche people , described by his reporter, Antonio Pigafetta, as giants called Patagons . The territory became the Spanish colony of the Governorate of New Léon, granted in 1529 to Governor Simón de Alcazaba y Sotomayor  [ es ] , part of

1089-449: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

1210-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

1331-549: A group led by Eric Hertz and Chris Spelius were able to complete the entire whitewater section of the river. The internationally acclaimed rapids are on the Chilean side of the river. Paddlers describe the Chilean side of the Futaleufú in four distinct sections—the Upper, Middle, Lower, El Macal whitewater (Bottom), and El Macal flatwater. Rapids range in difficulty from Class II to Class V+ on

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1452-758: A horseriding lifestyle. While the interest of the Spanish Empire had been chiefly to keep other European powers away from Patagonia, independent Chile and Argentina began to colonize the territory slowly over the course of the 19th and early 20th centuries. This process brought a decline of the indigenous populations, whose lives and habitats were disrupted, while at the same time thousands of Europeans, Argentines, Chilotes and mainland Chileans settled in Patagonia. The contemporary economy of eastern Patagonia revolves around sheep farming and oil and gas extraction, while in western Patagonia fishing , salmon aquaculture , and tourism dominate. The name Patagonia comes from

1573-629: A hunter-gathered lifestyle. The indigenous peoples of the region included the Tehuelches , whose numbers and society were reduced to near extinction not long after the first contacts with Europeans. Tehuelches included the Gununa'kena to the north, Mecharnuekenk in south-central Patagonia, and the Aonikenk or Southern Tehuelche in the far south, north of the Magellan strait. On Isla Grande de Tierra del Fuego ,

1694-581: A multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of the world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins,

1815-586: A part of the Los Lagos Region , is also located within Patagonia. By some definitions, Chiloé Archipelago, the rest of the Los Lagos Region, and part of the Los Ríos Region are also part of Patagonia. Patagonia's climate is mostly cool and dry year round. The east coast is warmer than the west, especially in summer, as a branch of the southern equatorial current reaches its shores, whereas the west coast

1936-422: A region of steppe -like plains, rising in a succession of 13 abrupt terraces about 100 m (330 ft) at a time, and covered with an enormous bed of shingle almost bare of vegetation. In the hollows of the plains are ponds or lakes of fresh and brackish water. Towards Chilean territory, the shingle gives way to porphyry , granite , and basalt lavas, and animal life becomes more abundant. Vegetation

2057-754: A site for the conservation of marine mammals . The Patagonian freshwater fish fauna is relatively restricted compared to other similar Southern Hemisphere regions. The Argentine part is home to a total of 29 freshwater fish species, 18 of which are native. The introduced are several species of trout , common carp , and various species that originated in more northerly parts of South America. The natives are osmeriforms ( Aplochiton and Galaxias ), temperate perches ( Percichthys ), catfish ( Diplomystes , Hatcheria and Trichomycterus ), Neotropical silversides ( Odontesthes ) and characiforms ( Astyanax , Cheirodon , Gymnocharacinus , and Oligosarcus ). Other Patagonian freshwater fauna include

2178-467: A temperature of −25   °C has been recorded in Bariloche, and most places can often have temperatures between −12 and −15   °C and highs staying around 0   °C for a few days. Directly east of these areas, the weather becomes much harsher; precipitation drops to between 150 and 300 mm, the mountains no longer protect the cities from the wind, and temperatures become more extreme. Maquinchao

2299-636: Is a unitary state , its first-level administrative divisions—the regions—enjoy far less autonomy than analogous Argentine provinces. Argentine provinces have elected governors and legislatures, while Chilean regions had government-appointed intendants prior to the adoption of elected governors from 2021. The Patagonian Provinces of Argentina are Neuquén , Río Negro , Chubut , Santa Cruz , and Tierra del Fuego . The southernmost part of Buenos Aires Province can also be considered part of Patagonia. The two Chilean regions undisputedly located entirely within Patagonia are Aysén and Magallanes . Palena Province ,

2420-478: Is a few hundred kilometers east of Bariloche, at the same altitude on a plateau, and summer daytime temperatures are usually about 5   °C warmer, rising up to 35   °C sometimes, but winter temperatures are much more extreme: the record is −35   °C, and some nights not uncommonly reach 10   °C colder than Bariloche. The plateaus in Santa Cruz province and parts of Chubut usually have snow cover through

2541-567: Is a geographical region that encompasses the southern end of South America , governed by Argentina and Chile . The region comprises the southern section of the Andes Mountains with lakes, fjords , temperate rainforests , and glaciers in the west and deserts , tablelands , and steppes to the east. Patagonia is bounded by the Pacific Ocean on the west, the Atlantic Ocean to the east, and many bodies of water that connect them, such as

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2662-497: Is called "Camwy" in Patagonian Welsh. Chupat, Chubut and Camwy have the same meaning and are used to talk about the river and the province. Welsh settlers and placenames are associated with one of the projects of the country of Wales, Project Hiraeth. Due to the language, culture and location, many Patagonians do not consider themselves Latinos and proudly call themselves Patagonians instead. People from Y Wladfa, Laurie Island,

2783-492: Is caused principally by the sudden melting and retreat of ice aided by tectonic changes, has scooped out a deep longitudinal depression, best in evidence where in contact with folded Cretaceous rocks, which are lifted up by the Cenozoic granite. It generally separates the plateau from the first lofty hills, whose ridges are generally called the pre-Cordillera. To the west of these, a similar longitudinal depression extends all along

2904-481: Is more luxuriant, consisting principally of southern beech and conifers . The high rainfall against the western Andes ( Wet Andes ) and the low sea-surface temperatures offshore give rise to cold and humid air masses, contributing to the ice fields and glaciers , the largest ice fields in the Southern Hemisphere outside of Antarctica. Among the depressions by which the plateau is intersected transversely,

3025-542: Is president of the Chilean NGO Ecosistemas and board member of International Rivers, a US-based NGO involved with rivers worldwide. International Rivers and the broader coalition Patagonia Defense Council (CDP) popularized the Patagonia Sin Represas (Patagonia without dams) campaign. This internationally supported movement was influential in opposition to the proposed HidroAysén hydropower project, which

3146-480: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

3267-600: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

3388-637: Is very scarce. The weather only gets a bit colder further south in Chubut, and the city of Comodoro Rivadavia has summer temperatures of 24 to 28   °C, nights of 12 to 16   °C, and winters with days around 10   °C and nights around 3   °C, and less than 250 mm of rain. However, a drastic drop occurs as one moves south to Santa Cruz; Rio Gallegos, in the south of the province, has summer temps of 17 to 21   °C, (nights between 6 and 10   °C) and winter temperatures of 2 to 6   °C, with nights between −5 and 0   °C, despite being right on

3509-454: Is washed by a cold current. However, winters are colder on the inland plateaus east of the slopes and further down the coast on the southeast end of the Patagonian region. For example, at Puerto Montt , on the inlet behind Chiloé Island, the mean annual temperature is 11 °C (52 °F) and the average extremes are 25.5 and −1.5 °C (77.9 and 29.3 °F), whereas at Bahía Blanca near

3630-682: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

3751-560: The Cuncos (also known as Veliches) settled in Chiloé Island in Pre-Hispanic times as a consequence of a push from more northern Huilliches who in turn were being displaced by Mapuches . While being outside traditional Huilliche territory the western Patagonian volcanoes Michimahuida , Hornopirén and Chaitén have Huilliche etymologies. In Chubut Province modern toponymy comes from

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3872-769: The Early Holocene (c. 9000 years BP ) much in the same way that Riesco Island was back then. A Selk'nam tradition recorded by the Salesian missionary Giuseppe María Beauvoir relate that the Selk'nam arrived in Tierra del Fuego by land, and that the Selk'nam were later unable to return north as the sea had flooded their crossing. Agriculture was practised in Pre-Hispanic Argentina as far south as southern Mendoza Province . Agriculture

3993-584: The Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and the greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to

4114-642: The Governorates of the Spanish Empire of the Americas. The territory was redefined in 1534 and consisted of the southernmost part of the South American continent and the islands towards Antarctica. Rodrigo de Isla , sent inland in 1535 from San Matías by Simón de Alcazaba y Sotomayor (on whom western Patagonia had been conferred by Charles I of Spain , is presumed to have been the first European to have traversed

4235-596: The International Scale of River Difficulty , and each section offers a unique spread of difficulty. The most difficult and dangerous is the upper section, 22 kilometres (14 mi), containing 6 class V rapids and the highly continuous “Wild Mile” class IV section. The middle 7 kilometres (4 mi) contains what many consider to be the longest and most technical rapid on the river, Terminator (class V+), along with several other difficult class IV rapids. Because most of these are conducive to avoiding or portaging, however,

4356-718: The Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain the most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

4477-781: The Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of the Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of

4598-511: The Patagonian mara ( Dolichotis patagonum ) are also characteristic of the steppe and the pampas to the north. The fauna of Patagonia was heavily decimated by the end-Pleistocene extinction event around 12-10,000 years ago that resulted in the extinction of most large ( megafaunal ) animal species native to the region (as well as across the Americas). Species formerly present in the region include

4719-497: The Selk'nam (Ona) and Haush (Manek'enk) lived in the north and southeast, respectively. In the archipelagos to the south of Tierra del Fuego were Yámana, with the Kawéskar (Alakaluf) in the coastal areas and islands in western Tierra del Fuego and the southwest of the mainland. In the Patagonian archipelagoes north of Taitao Peninsula lived the Chonos . These groups were encountered in

4840-668: The Strait of Magellan , the Beagle Channel , and the Drake Passage to the south. The Colorado and Barrancas rivers, which run from the Andes to the Atlantic, are commonly considered the northern limit of Argentine Patagonia. The archipelago of Tierra del Fuego is sometimes included as part of Patagonia. Most geographers and historians locate the northern limit of Chilean Patagonia at Huincul Fault , in Araucanía Region . At

4961-571: The Yagagtoo , Musters , and Colhue Huapi , and others situated to the south of Puerto Deseado in the center of the country. Across much of Patagonia east of the Andes, volcanic eruptions have created formation of basaltic lava plateaus during the Cenozoic . The plateaus are of different ages with the older –of Neogene and Paleogene age– being located at higher elevations than Pleistocene and Holocene lava plateaus and outcrops. Erosion, which

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5082-555: The patagon personage in the chivalric romances Primaleon printed in 1512, ten years before Magellan arrived in these southern lands. This hypothesis was published in a 2011 New Review of Spanish Philology report. There are various placenames in the Chiloé Archipelago with Chono etymologies despite the main indigenous language of the archipelago at the arrival of the Spanish being Mapudungun . A theory postulated by chronicler José Pérez García explains this holding that

5203-606: The 40th parallel, they found a "land" or a "point extending into the sea", and further south, a gulf. The expedition is said to have rounded the gulf for nearly 300 km (186 mi) and sighted the continent on the southern side of the gulf. The Atlantic coast of Patagonia was first fully explored in 1520 by the Spanish expedition led by Ferdinand Magellan , who on his passage along the coast named many of its more striking features – San Matías Gulf, Cape of 11,000 Virgins (now simply Cape Virgenes ), and others. Magellan's fleet spent

5324-710: The Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains the eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ),

5445-602: The Atlantic Islands, Antarctica (including the Chilean town in Antarctica, "The Stars Village", and the Argentine civilian settlement, "Hope Base"), other non-latin speaking areas use this term as a patriotic and inclusive demonym. A Patagonian is a person that is part of the Patagonia region, language and culture. That person could be a citizen from Chilean Patagonia, Argentine Patagonia, or of native communities that existed before

5566-431: The Atlantic coast and just outside the northern confines of Patagonia, the annual temperature is 15 °C (59 °F) and the range much greater, as temperatures above 35   °C and below −5   °C are recorded every year. At Punta Arenas, in the extreme south, the mean temperature is 6 °C (43 °F) and the average extremes are 24.5 and −2 °C (76.1 and 28.4 °F). The prevailing winds are westerly, and

5687-473: The Atlantic coast of Patagonia. The geological limit of Patagonia has been proposed to be Huincul Fault , which forms a major discontinuity. The fault truncates various structures including the Pampean orogen found further north. The ages of base rocks change abruptly across the fault. Discrepancies have been mentioned among geologists on the origin of the Patagonian landmass. Víctor Ramos has proposed that

5808-450: The Atlantic coast, through the Strait of Magellan and northward along the Pacific coast, was memorable, yet the descriptions of the geography of Patagonia owe much more to the Spanish explorer Pedro Sarmiento de Gamboa (1579–1580), who, devoting himself especially to the south-west region, made careful and accurate surveys. The settlements that he founded at Nombre de Jesús and San Felipe

5929-701: The Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America , the islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through

6050-421: The Futaleufú is dammed once near its source in Argentina and is free flowing through Chile. The Futaleufú Hydroelectric Complex in Argentina, also known as Dam Amutui Quimey, is a 120-metre (390 ft) high embankment dam with 472 megawatt generation capacity that was finished in 1978. Amutui Quimey lake, the reservoir behind the dam, is now in place of what used to be three natural glacial lakes. After leaving

6171-553: The Futaleufú watershed remain unclear. The Futaleufú area of Palena District Chile, is rich in natural resources of timber, water, precious metal , and natural scenery that attract competing interests concerning utilization. This predominantly rural region relies on small-scale agriculture and fisheries as its principal industries, and currently ranks among Chile's lowest in economic performance. Adventure travel and ecotourism have been steadily contributing to growth in recent years, as Chilean and international visitors are attracted to

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6292-942: The Futaleufú, possibly displacing more jobs than they create for local residents. Reservoirs, new roads, land degradation , and mining sites are largely incompatible with previous land uses in areas where this new infrastructure would be established. If completed, dams and their accompanying infrastructure would open previously remote areas to mining activities—for which some companies already have listed claims. This raises issues of environmental justice , as many local people, including some of indigenous heritage, would be disenfranchised by changing land use and economic structure. Some energy from hydropower companies would be used locally by residents, mining operations, and other industry, but Endesa's previous plans suggest that most electricity would be transmitted northward to Chile's metropolitan areas, which commonly experience power shortages. Many residents and community organizers believe that tourism may be

6413-400: The Futaleufú. Any such large-scale development project, hydroelectric or mining, is subject to an environmental impact assessment and permitting by the Chilean government , which retains power to override ownership rights in the face of unacceptable impact or risk. This legal tool has been used to halt projects elsewhere in the past, but the policy implications of a would-be impact assessment in

6534-438: The Patagonian landmass originated as an allochthonous terrane that separated from Antarctica and docked in South America 250 to 270 Mya in the Permian period. A 2014 study by R.J. Pankhurst and coworkers rejects any idea of a far-traveled Patagonia, claiming it is likely of parautochtonous (nearby) origin. The Mesozoic and Cenozoic deposits have revealed a most interesting vertebrate fauna. This, together with

6655-422: The Patagonian plains. The Patagonian steppe is one of the last strongholds of the guanaco and Darwin's rheas ( Rhea pennata ), which had been hunted for their skins by the Tehuelches , on foot using boleadoras , before the diffusion of firearms and horses ; they were formerly the chief means of subsistence for the natives, who hunted them on horseback with dogs and bolas . Vizcachas ( Lagidum spp.) and

6776-505: The Patagonians as "roaring like bulls"). Drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming

6897-433: The Rio Espolon, and the Rio Azul. All three major tributaries of the "Futa" can be rafted or kayaked in season, with the exception of a gorge on the Espolon called "The Devil's Throat". The Futaleufú watershed also includes several lakes including Lago Espolon, Lago Lonconao, and Lago Pinilla. The Futaleufú (The 'Fu' or ‘Futa’ for short) is known for its turquoise waters, a phenomenon produced by glacial till . Every summer,

7018-417: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

7139-510: The area's rugged mountains and whitewater rivers. X Region is, in fact, visited by international tourists more than any other rural region of Chile. These same mountains and rivers, however, are prime targets for resource development by mining and hydropower companies. Hydropower development promises affordable electricity and creation of new jobs in the region, and mining industry would likely follow with more jobs. However, such activities would exclude much traditional economy and tourism around

7260-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

7381-480: The border with Chile, receives up to 434 mm of rain and snow in May, 297 mm in June, and 273 in July, compared to 80 in February and 72 in March. The total for the city is 2074 mm, making it one of the rainiest in Argentina. Further west, some areas receive up to 4,000 mm and more, especially on the Chilean side. In the northeast, the seasons for rain are reversed; most rain falls from occasional summer thunderstorms but totals barely reach 500 mm in

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7502-592: The coast in the north but happens more often in the south, and frost is usually not very intense. Immediately east from the coast are the Andes, cut by deep fjords in the south and by deep lakes in the north, and with varying temperatures according to the altitude. The tree line ranges from close to 2,000 m on the northern side (except for the Andes in northern Neuquén in Argentina, where sunnier and dryer conditions allow trees to grow up to close to 3,000 m), and diminishes southward to only 600–800   m in Tierra del Fuego. Precipitation changes dramatically from one spot to

7623-420: The coast. Snowfall is common despite the dryness, and temperatures are known to fall to under −18   °C and to remain below freezing for several days in a row. Rio Gallegos is also among the windiest places on Earth, with winds reaching 100 km/h occasionally. Tierra del Fuego is extremely wet in the west, relatively damp in the south, and dry in the north and east. Summers are cool (13 to 18   °C in

7744-491: The coastline of Patagonia is possibly mentioned in a Portuguese voyage in 1511–1512, traditionally attributed to captain Diogo Ribeiro, who after his death was replaced by Estevão de Frois, and was guided by the pilot and cosmographer João de Lisboa ). The explorers, after reaching Rio de la Plata (which they would explore on the return voyage, contacting the Charrúa and other peoples) eventually reached San Matias Gulf , at 42°S. The expedition reported that after going south of

7865-503: The company acknowledged widespread international opposition as a major reason for the decision. This is a major victory for activists, but no one denies that the watershed is still threatened. Endesa could reopen plans or sell its development rights to another company at any time. Futaleufú Riverkeeper, Ecosistemas, and International Rivers are notable NGOs that currently advocate for the Futaleufú. Futaleufú Riverkeeper--based in New York City, USA, and Futaleufú Chile--has been outspoken on

7986-541: The dam project and protect the natural areas and communities of the Futaleufú watershed, regarding the area as an international treasure. In October 2014, citing international opposition, Endesa removed the Futaleufú from its list of future projects. Chile's extensively privatized economy has allowed Endesa to purchase water rights throughout the country—effectively owning a portion of the Futaleufú's water to use at its discretion. In addition, mining companies have filed claims to extract mineral deposits beneath and surrounding

8107-485: The dam, the Futaleufú is free flowing for the remainder of its 105-kilometre (65 mi) journey until Yelcho Lake. The multinational corporation Endesa proposed a large-scale hydroelectric project on the Chilean side of the Futaleufú watershed . The Endesa proposal would have built three dams, quelling the river's free flow and covering many of the rapids with a series of reservoirs. Several Chilean as well as international non-profit organizations joined forces to fight

8228-537: The details of which are as yet poorly understood. Several sites have been excavated, notably caves such as Cueva del Milodon in Última Esperanza in southern Patagonia, and Tres Arroyos on Tierra del Fuego, that support this date. Hearths, stone scrapers, and animal remains dated to 9400–9200 BC have been found east of the Andes. At the close of the Pleistocene around 12-11,000 years ago (10,000-9,000 BC) Fishtail projectile points (a type of knapped stone spear point) were widespread across Patagonia (along with much of

8349-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

8470-405: The discovery of the perfect cranium of a turtle ( chelonian ) of the genus Niolamia , which is almost identical to Ninjemys oweni of the Pleistocene age in Queensland , forms an evident proof of the connection between the Australian and South American continents. The Patagonian Niolamia belongs to the Sarmienti Formation. Fossils of the mid-Cretaceous Argentinosaurus , which may be

8591-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

8712-692: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

8833-399: The first periods of European contact with different lifestyles, body decoration, and language, although it is unclear when this configuration emerged. Towards the end of the 16th century, Mapuche -speaking agriculturalists penetrated the western Andes and from there across into the eastern plains and down to the far south. Through confrontation and technological ability, they came to dominate

8954-461: The foot of the snowy Andean Cordillera. This latter depression contains the richest, most fertile land of Patagonia. Lake basins along the Cordillera were also gradually excavated by ice streams, including Lake Argentino and Lake Fagnano , as well as coastal bays such as Bahía Inútil . The establishment of dams near the Andes in Argentina in the 20th century has led to a sediment shortage along

9075-570: The front line of much debate surrounding the river. It is the only keeper organization dedicated to the Futaleufú. Executive Director Rocio Gonzalez is a Chilean native and lives in Futaleufú with her family. Patrick J. Lynch, the organization's International Director, is a public interest lawyer licensed in New York. Another U.S. attorney involved with the Futaleufú is Robert F. Kennedy, Jr. , well-known luminary of environmental law and president of Waterkeeper Alliance . Chilean attorney Juan Pablo Orrego

9196-498: The future. However, the industry must be managed carefully to minimize environmental impact and empower local communities. High traffic during the tourism season can cause degradation from transportation demands, energy use, and waste. Additionally, if tourist attractions and infrastructure are not owned and operated locally, revenue may escape the region rather than capturing benefit for the people who live there. When Endesa retracted its plans for building three large hydroelectric dams,

9317-449: The great Patagonian plain. If the men under his charge had not mutinied, he might have crossed the Andes to reach the Pacific coast. Pedro de Mendoza , on whom the country was next bestowed, founded Buenos Aires , but did not venture south. Alonso de Camargo  [ es ] (1539), Juan Ladrilleros (1557), and Hurtado de Mendoza (1558) helped to make known the Pacific coasts, and while Sir Francis Drake 's voyage in 1577 down

9438-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

9559-744: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

9680-739: The highly unusual aeglid crustaceans. Human habitation of the region dates back thousands of years, with some early archaeological findings in the area dated to at least the 13th millennium BC , although later dates around the 10th millennium BC are more securely recognized. Evidence exists of human activity at Monte Verde in Llanquihue Province , Chile, dated to around 14,500 years Before Present (~12,500 BC). The glacial-period ice fields and subsequent large meltwater streams would have made settlement difficult at that time. The region seems to have been inhabited continuously since 10,000 BC by various cultures and alternating waves of migration,

9801-460: The key to a more sustainable path toward development in Palena and be better for its communities in the long run. In the absence of hydropower and extractive development, tourist visitation is expected to continue increasing in coming years, drawn by the Futaleufú's pristine whitewater and unspoiled natural scenery. Ecotourism is already bringing an influx of money to the region and can multiply benefits in

9922-460: The land was divided by The Boundary Treaty of 1881 . Patagonia is divided between Western Patagonia (Chile) and Eastern Patagonia (Argentina) and several territories are still under dispute and claiming their rights. Mapuche people came from the Chilean Andes and voted to remain in different sides of Patagonia. Welsh settlers came from Wales and North America and voted to remain in Patagonia; when

10043-488: The large cow-sized ground sloth Mylodon , the large camel-like ungulate Macrauchenia , indigenous equines belonging to the genus Hippidion , the giant short-faced bear Arctotherium , and the large sabertooth cat Smilodon . The extinct fox Dusicyon avus (a close relative of the Falkland Islands wolf ) also formerly inhabited the region, until apparently becoming extinct around 500-400 years ago. Patagonia

10164-513: The largest of all dinosaurs, have been found in Patagonia, and a model of the mid- Jurassic Piatnitzkysaurus graces the concourse of the Trelew airport (the skeleton is in the Trelew paleontological museum; the museum's staff has also announced the discovery of a species of dinosaur even bigger than Argentinosaurus ). Of more than paleontological interest, the middle Jurassic Los Molles Formation and

10285-542: The many kinds of waterfowl the Chilean flamingo ( Phoenicopterus chilensis ), the upland goose ( Chloephaga picta ), and in the strait, the remarkable steamer ducks are found. Signature marine fauna include the southern right whale , the Magellanic penguin ( Spheniscus magellanicus ), the killer whale , and elephant seals . The Valdés Peninsula is a UNESCO World Heritage Site , designated for its global significance as

10406-454: The middle section less demanding than the upper. The lower section, 13 kilometres (8 mi), is very popular for its high-quality, continuous, class IV big water rapids, and a few class Vs. El Macal is popular with beginner paddlers for its class III rapids in the upper section, 4 kilometres (2.5 mi), which are a safer introduction to the Futaleufú's big water, and for its lower flatwater section, also 4 kilometres (2.5 mi). Currently,

10527-875: The more northerly regions of the Antarctic Plate began to subduct beneath Patagonia so that the Chile Triple Junction advanced to the north over time. The asthenospheric window associated to the triple junction disturbed previous patterns of mantle convection beneath Patagonia inducing an uplift of c. 1 km that reversed the Miocene transgression. At a state level, Patagonia visually occupies an area within two countries: approximately 10% in Chile and approximately 90% in Argentina . Both countries have organized their Patagonian territories into nonequivalent administrative subdivisions: provinces and departments in Argentina, as well as regions , provinces , and communes in Chile. As Chile

10648-448: The north, 12 to 16   °C in the south, with nights generally between 3 and 8   °C), cloudy in the south, and very windy. Winters are dark and cold, but without the extreme temperatures in the south and west ( Ushuaia rarely reaches −10   °C, but hovers around 0   °C for several months, and snow can be heavy). In the east and north, winters are much more severe, with cold snaps bringing temperatures down to −20   °C all

10769-411: The northeast corner, and rapidly decrease to less than 300 mm. The Patagonian west coast, which belongs exclusively to Chile, has a cool oceanic climate, with summer maximum temperatures ranging from 14   °C in the south to 19   °C in the north (and nights between 5 and 11   °C) and very high precipitation, from 2,000 to more than 7,000 mm in local microclimates. Snow is uncommon at

10890-476: The other and diminishes very quickly eastward. An example of this is Laguna Frías, in Argentina, which receives 4,400 mm yearly. The city of Bariloche, about 40 km further east, receives about 1,000 mm, and the airport, another 15 km east, receives less than 600 mm. The easterly slopes of the Andes are home to several Argentine cities: San Martín de los Andes , Bariloche, El Bolsón , Esquel , and El Calafate . Temperatures there are milder in

11011-532: The other peoples of the region in a short period of time, and are the principal indigenous community today. Navigators such as Gonçalo Coelho and Amerigo Vespucci possibly had reached the area (his own account of 1502 has it that they reached the latitude 52°S), but Vespucci's failure to accurately describe the main geographical features of the region such as the Río de la Plata casts doubts on whether they really did so. The first or more detailed description of part of

11132-801: The principal ones are the Gualichu , south of the Río Negro , the Maquinchao and Valcheta (through which previously flowed the waters of Nahuel Huapi Lake , which now feed the Limay River), the Senguerr (spelled Senguer on most Argentine maps and within the corresponding region), and the Deseado River . Besides these transverse depressions (some of them marking lines of ancient interoceanic communication), others were occupied by either more or less extensive lakes, such as

11253-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

11374-458: The region, apparently hunting of guanaco, and to a lesser extent rhea ( ñandú ), were the primary food sources of tribes living on the eastern plains. It is also not clear if domestic dogs were part of early human activity. Bolas are commonly found and were used to catch guanaco and rhea . A maritime tradition existed along the Pacific coast, whose latest exponents were the Yaghan (Yámana) to

11495-625: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

11616-451: The rest of South America). At several sites these points have been found associated with extinct megafauna, including the large ground sloth Mylodon and the native equine Hippidion . The Cueva de las Manos is a famous site in Santa Cruz, Argentina. This cave at the foot of a cliff is covered in wall paintings, particularly the negative images of hundreds of hands, believed to date from around 8000 BC. Based on artifacts found in

11737-626: The river is renamed Rio Yelcho and continues to its mouth at the Pacific Ocean . From its source in Argentina, the river flows 35 kilometres (22 mi) to the Chilean border and enters the Palena Province , in Los Lagos (X) Region . Whitewater enthusiasts generally paddle the Chilean side of the river. During its course through Chile, the Futaleufú River has three major tributaries, the Rio Chico,

11858-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

11979-679: The singular mammal Pyrotherium , also of very large dimensions. In the Cenozoic marine formation, considerable numbers of cetaceans have been discovered. During the Oligocene and early Miocene , large swathes of Patagonia were subject to a marine transgression , which might have temporarily linked the Pacific and Atlantic Oceans, as inferred from the findings of marine invertebrate fossils of both Atlantic and Pacific affinity in La Cascada Formation . Connection would have occurred through narrow epicontinental seaways that formed channels in

12100-560: The south of Tierra del Fuego, the Kaweshqar between Taitao Peninsula and Tierra del Fuego, and the Chono people in the Chonos Archipelago . The Selk'nam , Haush , and Tehuelche are generally thought to be culturally and linguistically related peoples physically distinct from the sea-faring peoples. It is possible that Isla Grande de Tierra del Fuego was connected to the mainland in

12221-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

12342-674: The still richer late Jurassic ( Tithonian ) and early Cretaceous ( Berriasian ) Vaca Muerta formation above it in the Neuquén basin are reported to contain huge hydrocarbon reserves (mostly gas in Los Molles, both gas and oil in Vaca Muerta) partly accessible through hydraulic fracturing . Other specimens of the interesting fauna of Patagonia, belonging to the Middle Cenozoic, are the gigantic wingless birds, exceeding in size any hitherto known, and

12463-494: The summer (in the north, between 20 and 24   °C, with cold nights between 4 and 9   °C; in the south, summers are between 16 and 20   °C, at night temperatures are similar to the north) and much colder in the winter, with frequent snowfall (although snow cover rarely lasts very long). Daytime highs range from 3 to 9   °C in the north, and from 0 to 7   °C in the south, whereas nights range from −5 to 2   °C everywhere. Cold waves can bring much colder values;

12584-419: The time of the Spanish arrival , Patagonia was inhabited by multiple indigenous tribes. In a small portion of northwestern Patagonia, indigenous peoples practiced agriculture, while in the remaining territory, peoples lived as hunter-gatherers, traveling by foot in eastern Patagonia or by dugout canoe and dalca in the fjords and channels . In colonial times indigenous peoples of northeastern Patagonia adopted

12705-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

12826-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

12947-569: The time, and a favorite reading of Magellan. Magellan's perception of the natives, dressed in skins, and eating raw meat, clearly recalled the uncivilized Patagón in Vázquez's book. Novelist and travel writer Bruce Chatwin suggests etymological roots of both Patagon and Patagonia in his book, In Patagonia , noting the similarity between "Patagon" and the Greek word παταγος, which means "a roaring" or "gnashing of teeth" (in his chronicle, Pigafetta describes

13068-446: The time, prompting some of them to believe that Patagonians were giants. According to Antonio Pigafetta, one of the Magellan expedition's few survivors and its published chronicler, Magellan bestowed the name Patagão (or Patagón ) on the inhabitants they encountered there, and the name "Patagonia" for the region. Although Pigafetta's account does not describe how this name came about, subsequent popular interpretations gave credence to

13189-459: The town of Futaleufú stages an annual river festival called "Futafest". The Futaleufú and its tributary streams and lakes are also destinations for fly fishing . The Futaleufú was first kayaked in January 1985 by Mark Allen, Phil DeReimer, Lars Holbek & Eric Magneson. The first raft descent was attempted in 1985 by a group led by Steve Curry. The first successful raft descent was in 1991, when

13310-469: The treaty was signed, they voted for culture and administration to be apart from the country keeping the settlement, language, schools, traditions, regional dates, flag, anthems, and celebrations. Patagonians also live abroad in settlements like Saltcoats, Saskatchewan , Canada; New South Wales , Australia; South Africa; the Falkland Islands; and North America. Argentine Patagonia is for the most part

13431-662: The valley as "un paisaje pintado por Dios" — a landscape painted by God. The Futaleufú River is fed by a chain of lakes in the Los Alerces National Park in Chubut Province , Argentina. The name, Futaleufú, is given to the river below the Futaleufú Dam and Amutui Quimey Reservoir . The watershed drains the Southern Andes Mountains from Argentina into Chile and drains into Yelcho Lake . From this point

13552-463: The way to the Rio Grande on the Atlantic coast. Snow can fall even in the summer in most areas, as well. The guanaco ( Lama guanicoe ), South American cougar ( Puma concolor concolor ), the Patagonian fox ( Lycalopex griseus ), Patagonian hog-nosed skunk ( Conepatus humboldtii ), and Magellanic tuco-tuco ( Ctenomys magellanicus ; a subterranean rodent ) are the most characteristic mammals of

13673-440: The westward slope has a much heavier precipitation than the eastern in a rainshadow effect; the western islands close to Torres del Paine receive an annual precipitation of 4,000 to 7,000 mm, whilst the eastern hills are less than 800 mm and the plains may be as low as 200 mm annual precipitation. Precipitation is highly seasonal in northwestern Patagonia. For example, Villa La Angostura in Argentina, close to

13794-615: The winter, and often experience very cold temperatures. In Chile, the city of Balmaceda is known for being situated in this region (which is otherwise almost exclusively in Argentina), and for being the coldest place in Chile. In 2017, temperatures even dropped down to −20   °C in the region. The northern Atlantic coast has warm summers (28 to 32   °C, but with relatively cool nights at 15   °C) and mild winters, with highs around 12   °C and lows about 2–3   °C. Occasionally, temperatures reach −10 or 40   °C, and rainfall

13915-550: The word patagón . Magellan used this term in 1520 to describe the native tribes of the region, whom his expedition thought to be giants. The people he called the Patagons are now believed to have been the Tehuelche , who tended to be taller than Europeans of the time. Argentine researcher Miguel Doura observed that the name Patagonia possibly derives from the ancient Greek region of modern Turkey called Paphlagonia , possible home of

14036-466: The word "chupat" belonging to a transitional language between the southern and northern Tehuelche ethnic groups that were located in that region called Tewsün or Teushen. The word means transparency and is related to the clarity and purity of the river that bears that name and runs through the province. It is also related to the origin of the Welsh pronunciation of the word "chupat" which later became "Chubut". It

14157-698: The world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan, the Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of

14278-411: Was at times practised beyond this limit in nearby areas of Patagonia but populations reverted at times to non-agricultural lifestyles. By the time of the Spanish arrival to the area (1550s) there is no record of agriculture being practised in northern Patagonia. The extensive Patagonian grasslands and an associated abundance of guanaco game may have contributed for the indigenous populations to favour

14399-449: Was disapproved by Chile's Committee of Ministers in June 2014. Fighting for the Futaleufú , a documentary film by Stephanie Haig, was released in 2013 and has toured international film festivals. The film highlights the effects that hydroelectric dams would have on the watershed and the people living there. Patagonia Patagonia ( Spanish pronunciation: [pataˈɣonja] )

14520-462: Was formerly inhabited by the jaguar subspecies Panthera onca mesembrina (which is considerably larger than living jaguars) during the Pleistocene, with jaguars continuing to inhabit Patagonia into historic times (until the late 19th century), but are now extirpated from the region. Bird life is often abundant. The crested caracara ( Caracara plancus ) is one of the characteristic aspects of

14641-541: Was neglected by the Spanish government, the latter being abandoned before Thomas Cavendish visited it in 1587 during his circumnavigation , and so desolate that he called it Port Famine . After the discovery of the route around Cape Horn, the Spanish Crown lost interest in southern Patagonia until the 18th century, when the coastal settlements Carmen de Patagones, San José, Puerto Deseado, and Nueva Colonia Floridablanca were established, although it maintained its claim of

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