Lake Argentino is the largest in Argentina because of it surface of 1,56 km2 and the third one in South America. At 185 meters above sea level, has a length of 125 km and a maximum width of between 14 and 20 kilometers.
The lake consists of a main body and some branches or arms: arm Upsala, Norte, Rico and Sur. The latter two merge with the primary mirror of the lake through the Canal of the Icebergs in front of the Perito Moreno glacier, draining the water there.
The depth of the lake varies between 35 and 1000 meters. On the south coast and in the center in front of the Peninsula Avellaneda is 300 meters.
Lake Argentino gives rise to the Santa Cruz River which empties into the Atlantic Ocean. The special color of its waters should be because of a fine product of the union of glaciers, called glacier milk.
Cruising the lake you can observe the Upsala and Spegazzini glaciers and Onelli Bay. Navigation is among great icebergs of incredible colors in excursions from Punta Bandera, 45 km from El Calafate.
This lake has a rare story of frustrated discoveries. In 1873, the sailor Valentin Filberg came to the lake and he didn't name it thinking it was Lake Viedma, discovered by Viedma in 1782. Four years later, Francisco Moreno and Carlos Moyano came to the lake cheking Feiberg error, this was another lake and Moreno decided to call it "Argentino" on February 15, 1877.
Today the lake is crossed by boats leaving from Puerto Bandera and low of the Shadow, cross the Canal of the Icebergs and penetrate arms Upsala, Norte and Rico.