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Posts tagged Lake Ihotry

Lake Ihotry and Mangoky River Delta, Madagascar

21.9S 43.6E

April 26th, 2013 Category: Lakes, Rivers

Madagascar – April 26th, 2013

Visible near the western shores of Madagascar is the green Lake Ihotry, a closed saline lake in semi-arid southwestern part of Madagascar. Its area varies seasonally, from 96 km² to 112 km², as does its salinity. Between the lake and the coast is a rather large, whitish area of sand interspersed with silt-laden ponds.

Visible north of the lake is the mouth of the Mangoky River, through which sediments can be seen pouring into the Mozambique Channel. The river is 564 kilometers (350 mi) long, rising in the Central Highlands and flowing generally in a westerly direction out of them, crossing the southern extension of the Bemaraha Plateau, until it reaches the coastal plain and its delta.

Most of Madagascar has undergone serious deforestation during the last 40 years, chiefly from slash-and-burn practises by indigenous peoples. This loss of forest has led to extreme soil erosion in the Mangoky River basin, as evidenced by the many sandbars located within the river channel.

The southern portion of the Ihotry delta is dominated by successive barrier island and spit formation. In contrast, the northern, protected portion of the delta is dominated by tidal passes and mangrove swamps.

Green Lake Ihotry Near Mouth of Mangoky River, Madagascar

21.7S 43.3E

May 4th, 2012 Category: Lakes, Rivers

Madagascar - April 28th, 2012

Rivers along the western coast of Madagascar carry tan sediments from the country’s central highlands to the Mozambique Channel. The river releasing the most sediments, visible in the lower part of the image, is the Mangoky River. With a length of 564 kilometers (350 mi), the river enters the Mozambique Channel north of the city of Morombe.

Visible south of the rivermouth and slightly further inland is Lake Ihotry, appearing bright green here. It is a closed saline lake in semi-arid southwestern part of Madagascar with an area that varies seasonally, from 96 km² to 112 km².

Mangoky River and Lake Ihotry by Madagascar’s West Coast

21.7S 43.3E

January 2nd, 2012 Category: Rivers, Sediments

Madagascar - December 24th, 2011

Several rivers, all tan due to the sediments they are carrying, can be observed flowing from Madagascar’s central highlands to the Mozambique Channel on the country’s west coast. One of the most visible of these is the Mangoky River, crossing the lower part of the image.

The Mangoky is a 564-kilometer-long (350 mi) river in that rises in the Central Highlands of Madagascar just east of the city of Fianarantsoa. The river flows generally in a westerly direction out of the highlands, crosses the southern extension of the Bemaraha Plateau, reaches the coastal plain and its delta, and enters the Mozambique Channel north of the city of Morombe.

Most of Madagascar has undergone serious deforestation during the last 40 years, chiefly from slash-and-burn practises by indigenous peoples. This loss of forest has led to extreme soil erosion in the Mangoky River basin, as evidenced by the many sandbars located within the river channel. Silt-laden, greenish-tan Lake Ihotry is clearly discernible south of the river. Between the lake and the coast is a rather large, whitish area of sand interspersed with silt-laden ponds. The southern portion of the delta is dominated by successive barrier island and spit formation.

Mangoky River and Lake Ihotry, Southwestern Madagascar

21.7S 43.3E

June 2nd, 2010 Category: Lakes, Rivers, Sediments

Madagascar - April 28th, 2010

Madagascar - April 28th, 2010

Several rivers are visible along the central- and south-western coast of Madagascar, emptying tan sediments into the Strait of Mozambique. One of the most prominent of these rivers is the Mangoky, whose mouth is situated northwest of a greenish lake.

This greenish body of water is Lake Ihotry, a closed saline lake in the semi-arid southwestern part of Madagascar. Its area varies seasonally, from 96 km² to 112 km².

Tuléar Reef and Southwestern Rivers, Madagascar

23.3S 43.6E

June 11th, 2009 Category: Rivers

Madagascar - June 8th, 2009

Madagascar - June 8th, 2009

Several rivers spill into the Mozambique Channel from the shores of Madagascar’s Toliara Province, in the southwestern part of the country.

The river closest to the bottom is the Onilahy. It flows down from the hills near Betroka to the Mozambique Channel. Along its path it flows through areas rich in biodiversity, including rainforests, red rock canyons and rice paddies.

Above the Onilahy is the Fiherenana River, which empties into the channel through the Delta du Fiherenana. Further up the coast is the Manombo River.

The coastal area near the mouths of these three rivers is part of the Tuléar Reef, stretching from the south of the Toliara Province up to Morombe. Only part of this reef, which is one of the longest reef barriers in the world, is visible as turquoise patches just offshore.

Finally, in the top left quadrant, the green waters of Lake Ihotry and the tan, sediment-laden Mangoky River can be seen.