The Pascua River is a river located in the Aysén del General Carlos Ibáñez del Campo Region of

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the eas ...

. In spite of being a short river, its

drainage basin A drainage basin is an area of land where 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, ...

is the seventh-largest in the country due to the great size of the O'Higgins/San Martín Lake, its source. The Pascua River was discovered in 1898 by the German Hans Steffen, during the exploration of the area near Christmas time (''Pascua'' means

Easter Easter,Traditional names for the feast in English are "Easter Day", as in the '' Book of Common Prayer''; "Easter Sunday", used by James Ussher''The Whole Works of the Most Rev. James Ussher, Volume 4'') and Samuel Pepys''The Diary of Samue ...

but is frequently used to describe Christmas in Chilean Spanish, thus explaining the origin of its name). 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

rapid Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade'' ...

s until it creates 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

meander A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse. It is produced as a watercourse erodes the sediments of an outer, concave bank ( cut bank) and deposits sediments on an inner, convex ban ...

s and some

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found ...

y and

peat Peat (), also known as turf (), is an accumulation of partially Decomposition, decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, Moorland, moors, or muskegs. The peatland ecosystem covers and ...

y zones. After 62 km, the Pascua River ends in a wide delta that empties into the

Baker Channel Baker Channel, also known as Calen Inlet, is a channel of Chile located in the Tortel, Aysén del General Carlos Ibáñez del Campo Region. The Baker River discharges into Martinez Inlet, the northern part of this large estuary. It penetrates t ...

, 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.

Gallery

Pascua-desague-lago-ohiggins.png, Total flow of Pascua River at different seasons

References

*This article draws heavily on the corresponding article in the Spanish-language Wikipedia, accessed November 10, 2006. {{coord, 48, 14, S, 73, 16, W, type:waterbody_source:kolossus-eswiki, display=title Pascua Rivers of Aysén Region