Isthmus of Ofqui

Península de Taitao: This SRTM inaccurate map doesn't show the connection between the Laguna San Rafael and the Estero Elefantes.

The Isthmus of Ofqui is a narrow isthmus that connects the Taitao Peninsula with the Chilean mainland. The isthmus is bounded in the south by the Gulf of Penas, in the north by the San Rafael Lagoon, in the west by the Taitao Peninsula and in the east by the Northern Patagonia Ice Field.

Geologically it is considered the southern end of the Chilean Central Valley, and the Liquiñe-Ofqui Fault. The Isthmus of Ofqui lies close to the Chile Triple Junction where the Nazca Plate, the South American Plate, and the Antarctic Plate meets.

The Isthmus of Ofqui canal construction project

The Negro River flows from near the San Rafael Laguna to the San Esteban Gulf

In 1937 the Chilean Government ordered the construction of a canal through the isthmus in order to open a direct passage from the Moraleda Channel to the Messier Channel and avoid going out into the open Pacific Ocean to get around the Taitao Peninsula:

  1. a 2,200 m long, 17 m wide, 5 m depth Canal between the Laguna San Rafael and the Negro River to connect then the
  2. Negro River (25 km).

The work began in 1937 under the management of the railways department of the Ministry of Public Works. Work continued until May 1943 when funds ran out.

See also

Coordinates: 46°47′50″S 74°04′04″W / 46.79722°S 74.06778°W / -46.79722; -74.06778


This article is issued from Wikipedia - version of the 3/23/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.