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Posts tagged Chubut River

Golfo Nuevo Between Valdes Peninsula and Punta Ninfas, Argentina

42.7S 65W

May 19th, 2011 Category: Rivers

Argentina - May 1st, 2011

The Valdes Peninsula juts out into the Atlantic Ocean off the east coast of Argentina. Two gulfs are visible on either side of the irregularly shaped peninsula – Golfo San José to the north, and Golfo Nuevo to the south.

Golfo Nuevo, or New Gulf, is bordered to the south by Punta Ninfas, a promontory  in Chubut Province, Patagonia, Argentina. About 90 km northwest of the point, on the west side of the almost circular gulf, is the city of Puerto Madryn.

The sediments south of the promotory are from the Chubut River, which can be seen crossing the terrain west of the promontory’s southern base.


Sediments from Chubut River South of Valdes Peninsula, Argentina

43.2S 65W

April 17th, 2010 Category: Lakes, Rivers

Argentina - February 25th, 2010

Argentina - February 25th, 2010

Sediments spill from the Chubut River and line the coast of Argentina in the Patagonia region. Further offshore, near the right edge of the image, a greenish stain is visible in the water; this may be caused by a faint phytoplankton bloom rather than sediments.

The river flows through Chubut Province for approximately 800 kilometres before emptying in the Atlantic Ocean at Engaño Bay near Rawson. The river is generally shallow and its water flow can vary from 4 to 30 m³/s between drought and flood. Flooding makes the lands beside the river fertile and important for agriculture.

North of the rivermouth is the Valdes Peninsula (Spanish: Península Valdés), in the north east of Chubut Province. Most of the peninsula is barren land, although there are some salt lakes, visible here. The largest of these lakes is at an elevation of about 40 m below sea level.

Lake Musters and Lake Colhué Huapi in Argentine Patagonia

45.4S 69.1W

March 18th, 2010 Category: Lakes, Rivers

Argentina - February 25th, 2010

Argentina - February 25th, 2010

Lake Musters (dark green, left) and Lake Colhué Huapi  (light green, right) form the terminal stage of the Senguerr River endorheic basin, located in the patagonic central region of Argentina in the south of Chubut province.

The basin lakes are fed mainly by the eastward-running Senguerr River which begins its journey in the glacial lakes of La Plata and Fontana in the Andes Mountains The inflow ranges from 35 to 54m³/sec and varies greatly by season and by year.

Both lakes suffer naturally from a severe evaporation process in the dry patagonian environment due to strong wind action and solar radiation. In shallow Colhué Huapi, evaporation has greatly increased.

In past decades, when excessive inflows did take place, water discharged to the birth branches of Chico River and eventually reached the Chubut River. This ephemeral process last occurred in 1939; however, since then the Chico River has mostly been dry.

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