The Limay River is an important

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

in the northwestern

Argentine Argentines, Argentinians or Argentineans are people from Argentina. This connection may be residential, legal, historical, or cultural. For most Argentines, several (or all) of these connections exist and are collectively the source of their ...

Patagonia Patagonia () is a geographical region that includes parts of Argentina and Chile at the southern end of South America. The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers ...

(the region of

Comahue Comahue is a sub-region of Argentina slightly to the south of the country's centre that covers the northern part of Argentine Patagonia and includes the provinces of Argentina, provinces of Neuquén Province, Neuquén and Río Negro Province, Rí ...

). It originates at the eastern end of the

Nahuel Huapi Lake Nahuel Huapi Lake () is an Andean lake in the lake region of northern Patagonia between the provinces of Río Negro and Neuquén, in Argentina. The lake has a northwest-southeast elongated shape and complex geography with several branches, pe ...

and flows in a

meander A meander is one of a series of regular sinuous curves in the Channel (geography), channel of a river or other watercourse. It is produced as a watercourse erosion, erodes the sediments of an outer, concave bank (cut bank, cut bank or river cl ...

ing path for about , collecting the waters of several

tributaries A tributary, or an ''affluent'', is a stream or river that flows into a larger stream ('' main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which the ...

, such as the

Traful River The Traful River is a river in Argentina. It flows from Traful Lake to Limay River. See also *List of rivers of Argentina This is a list of rivers of Argentina. Longest Rivers By drainage basin This list is arranged by drainage basin, with ...

, the Pichileufú and the Collón Curá. It then meets the

Neuquén River The Neuquén River () is the second most important river of the province of Neuquén in the Argentine Patagonia, after the Limay River. Rocks of the Neuquén Basin are fossiliferous, and the basin hosts what may become important fields of ...

and together they become the Río Negro. At this confluence lies the city of

Neuquén Neuquén (; ) is the capital city of the Argentine province of Neuquén and of the Confluencia Department, located in the east of the province. It occupies a strip of land west of the confluence of the Limay and Neuquén rivers which form t ...

. The river serves as natural border between the

provinces A province is an administrative division within a country or state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire's territorial possessions outside Italy. The term ''provi ...

of Río Negro and

. Its deep waters are clear, and carry a large flow, on average. Its

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, ...

has an area of and includes almost all the rivers and streams of the

Atlantic The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for se ...

basin in the region, as well as an extensive network of lakes. The waters of the Limay are used to generate

hydroelectricity Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

at the five

dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aqua ...

s built on its course: Alicurá, Piedra del Águila, Pichi Picún Leufú, El Chocón, and Arroyito; together with the Cerros Colorados Complex on the Neuquén River they constitute more than one quarter of Argentina's total hydroelectric power generation. The construction of the successive dams and reservoirs has reduced the length of the river, which originally measured about . In the 1980s the only

heavy water Heavy water (deuterium oxide, , ) is a form of water (molecule), water in which hydrogen atoms are all deuterium ( or D, also known as ''heavy hydrogen'') rather than the common hydrogen-1 isotope (, also called ''protium'') that makes up most o ...

plant in

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

was constructed next to the river at the town of Arroyito. The river is also used for

fly fishing Fly fishing is an angling technique that uses an ultra-lightweight lure called an artificial fly, which typically mimics small invertebrates such as flying and aquatic insects to attract and catch fish. Because the mass of the fly lure is in ...

; in some locations its banks are suitable as beach

resort A resort (North American English) is a self-contained commercial establishment that aims to provide most of a vacationer's needs. This includes food, drink, swimming, accommodation, sports, entertainment and shopping, on the premises. A hotel ...

s, with facilities for

camping Camping is a form of outdoor recreation or outdoor education involving overnight stays with a basic temporary shelter such as a tent. Camping can also include a recreational vehicle, sheltered cabins, a permanent tent, a shelter such as a Bivy bag ...

. It is the most popular river in Nahuel Huapi National Park for fly fishing. It originates in the East side of Nahuel Huapi lake. Lost in a typical steppe landscape with gin clear waters, big and deep pools, fast and strong currents and enormous fish, of course. Plentiful

rainbow trout The rainbow trout (''Oncorhynchus mykiss'') is a species of trout native to cold-water tributary, tributaries of the Pacific Ocean in North America and Asia. The steelhead (sometimes called steelhead trout) is an Fish migration#Classification, ...

and

brown trout The brown trout (''Salmo trutta'') is a species of salmonid ray-finned fish and the most widely distributed species of the genus ''Salmo'', endemic to most of Europe, West Asia and parts of North Africa, and has been widely introduced globally ...

, from 6 to 28 inches (and larger), live in the river. Various

islands This is a list of the lists of islands in the world grouped by country, by continent, by body of water, and by other classifications. For rank-order lists, see the #Other lists of islands, other lists of islands below. Lists of islands by count ...

in the

floodplain A floodplain or flood plain or bottomlands is an area of land adjacent to a river. Floodplains stretch from the banks of a river channel to the base of the enclosing valley, and experience flooding during periods of high Discharge (hydrolog ...

s of the lower course of the river have been urbanized. The origin of the word comes from the Mapuche indians and it means, crystalline, that you could see to the bottom.

Gallery

File:San Carlos de Barilocge 7.jpg, File:Rio Limay 3.jpg, File:Rio Limay 2.jpg, File:Rio Limay 10.jpg,

References

* Colbert E. Cushing, Kenneth W. Cummins, G. Wayne Minshall: ''River and Stream Ecosystems of the World: With a New Introduction''. University of California Press 2006, , S. 280ff
eingeschränkte Online-Version (Google Books)

Argentour
— ''Río Limay''

Ministry of Environment
— Hydrological basins of Argentina.
Ministry of Economy
— Provincial Economic Overview, Neuquén, August 2005. {{Authority control Rivers of Río Negro Province Rivers of Neuquén Province Rivers of Argentina