Gutiérrez Lake is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 of the lake region of northern Patagonia

Patagonia

Patagonia is a region located in Argentina and Chile, integrating the southernmost section of the Andes mountains to the southwest towards the Pacific ocean and from the east of the cordillera to the valleys it follows south through Colorado River towards Carmen de Patagones in the Atlantic Ocean...

 in the province of Río Negro

Río Negro Province

Río Negro is a province of Argentina, located at the northern edge of Patagonia. Neighboring provinces are from the south clockwise Chubut, Neuquén, Mendoza, La Pampa and Buenos Aires. To the east lies the Atlantic Ocean.Its capital is Viedma...

, in Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

. It is of glacial

Glacial lake

A glacial lake is a lake with origins in a melted glacier. Near the end of the last glacial period, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often left behind large deposits of ice in hollows between drumlins or hills. As the ice age ended, these melted to create...

 origin, being a Moraine-dammed lake. The lake is connected to Nahuel Huapi Lake

Nahuel Huapi Lake

Nahuel Huapi Lake is a lake in the lake region of northern Patagonia between the provinces of Río Negro and Neuquén, in Argentina. The lake depression consists of several glacial valleys carved out along faults and Miocene valleys that were later dammed by moraines.Nahuel Huapi lake, located...

.
It was named by explorer and naturalist Francisco P. Moreno

Francisco Moreno

Francisco Pascacio Moreno was a prominent explorer and academic in Argentina, where he is usually referred to as Perito Moreno...

 as an homage to his academic mentor Juan María Gutiérrez.

The lake harbors several species of trout including rainbow trout

Rainbow trout

The rainbow trout is a species of salmonid native to tributaries of the Pacific Ocean in Asia and North America. The steelhead is a sea run rainbow trout usually returning to freshwater to spawn after 2 to 3 years at sea. In other words, rainbow trout and steelhead trout are the same species....

, brown trout

Brown trout

The brown trout and the sea trout are fish of the same species....

 and brook trout

Brook trout

The brook trout, Salvelinus fontinalis, is a species of fish in the salmon family of order Salmoniformes. In many parts of its range, it is known as the speckled trout or squaretail. A potamodromous population in Lake Superior are known as coaster trout or, simply, as coasters...

 which attract anglers from the world over. http://www.bariloche.org/paginas/2007/02/27/la_fauna_del_parque_nacional_nahuel_huapi/

Despite being nowhere near any ocean and being at high altitude, the lake is also home to the Kelp Gull

Kelp Gull

The Kelp Gull , also known as the Dominican Gull, breeds on coasts and islands through much of the southern hemisphere. The race L. d. vetula occurs around southern Africa, and nominate L. d...

 and the Blue Eyed Cormorant

Cormorant

The bird family Phalacrocoracidae is represented by some 40 species of cormorants and shags. Several different classifications of the family have been proposed recently, and the number of genera is disputed.- Names :...

 (Phalacrocorax atriceps), otherwise strictly marine birds. http://www.birdsoman.com/Birds/017-Cormorants/BlueeyedCormorant/BlueeyedCormorant.htm http://www.ripioturismo.com.ar/np-nh.htm http://links.jstor.org/sici?sici=0010-5422(198608)88%3A3%3C393%3AROCPOJ%3E2.0.CO%3B2-W

The lake’s clear waters are very susceptible to climate change and have an average surface temperature of 45°F (7°C). Hypothermia

Hypothermia

Hypothermia is a condition in which core temperature drops below the required temperature for normal metabolism and body functions which is defined as . Body temperature is usually maintained near a constant level of through biologic homeostasis or thermoregulation...

 is one of the risks bathers must endure. Kayaking

Kayaking

Kayaking is the use of a kayak for moving across water. Kayaking and canoeing are also known as paddling. Kayaking is distinguished from canoeing by the sitting position of the paddler and the number of blades on the paddle...

is a popular sport on this and adjacent lakes.