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The Pascua River is a river located in the Aisen Region of Chile. In spite of being a short river, its drainage basin is the seventh-largest in the country due to the great size of the O'Higgins/San Martin Lake, its source.
The Pascua River was discovered in 1898 by the German Hans Steffen, during the exploration of the area near Christmas time . The river has its source in the northern part of the north-west arm of the lake O'Higgins in the form of a small stream, in an area surrounded by steep-sided mountains that reach over 1,000 meters with glaciers spilling down to the lake or to the river.
The river flows quickly forming rapids until to create a cascade in the place where it falls into the Chico Lake. After leaving this lake, the river forms a new cascade and rushes furiously, preventing any type of navigation on its waters. Then the river is joined by the "Quiroz River" from the left, whose origin is the glacier of the same name, increasing its width in a valley of about 10 kilometers wide, which allows the development of large meanders and some marshy and peaty zones.
After 62 km, the Pascua River ends in a wide delta that empties into the Baker Channel, previously having rushed in a last area of rapids.
Due to its hydrographic conditions, the Pascua River has a hydroelectric potential of great importance. There exists a controversial Endesa project to construct two massive power dams on the course of the river, but the proposal has generated immediate opposition from a great part of the population and in the government authorities, due to the serious ecological damage that would cause in the zone.
This article draws heavily on the [[:es:Rio Pascua|corresponding article]] in the [[:es:Portada|Spanish-language Wikipedia]], accessed November 10, 2006.
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Pascua River