The Mangoky River is a 564-kilometer-long (350 mi) river in

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...

in the regions of

Atsimo-Andrefana Atsimo-Andrefana is a region of Madagascar. It borders Menabe in north, Amoron'i Mania and Haute Matsiatra in northeast, Ihorombe and Anosy in east and Androy in southeast. The capital is Toliara and the population was 1,799,088 in 2018. Atsimo ...

and

Anosy Anosy is one of the 22 regions of Madagascar. It is located in the southeast of the country, on the eastern side of what was once the Toliara Province. The name ''Anosy'' means "island(s)" in Malagasy. Due to a strategic sea route running alo ...

. It is formed by the

Mananantanana The Mananantanana is a river in Haute Matsiatra region, is located in eastern Madagascar. It flows into the Mangoky River. It has its springs in the Andringitra Massif. Together with the Matsiatra it forms the Mangoky River The Mangoky Rive ...

and the

Matsiatra The Matsiatra is a river in Haute Matsiatra region, is located in central and western Madagascar. It flows into the Mangoky River. Together with the Mananantanana, it forms the Mangoky River The Mangoky River is a 564-kilometer-long (350&nbs ...

. Another important affluent is the

Zomandao River The Zomandao River is a 283-km-long river in the regions of Haute Matsiatra and Ihorombe in central-southern Madagascar. It begins in the Andringitra Massif at Boby Peak, the second highest peak of Madagascar, and flows across the Zomandao Plai ...

. It rises in the Central Highlands of

just east of the city of

Fianarantsoa Fianarantsoa is a city (commune urbaine) in south central Madagascar, and is the capital of Haute Matsiatra Region. History It was built in the early 19th century by the Merina as the administrative capital for the newly conquered Betsileo king ...

. 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 The Mozambique Channel (french: Canal du Mozambique, mg, Lakandranon'i Mozambika, pt, Canal de Moçambique) is an arm of the Indian Ocean located between the Southeast African countries of Madagascar and Mozambique. The channel is about long ...

north of the city of

Morombe Morombe is an urban municipality (commune urbaine) on the south-west coast in Atsimo-Andrefana, Madagascar. It can be reached by the National road 55 or pirogue from Morondava. It is situated at 283 km from Tulear. An airport serves the town. ...

at . Most of Madagascar has undergone serious

deforestation Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated d ...

during the last 40 years, chiefly from

slash-and-burn Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegeta ...

practises by indigenous peoples. This loss of forest has led to extreme

soil erosion Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and ...

in the Mangoky River basin, as evidenced by the many

sandbar In oceanography, geomorphology, and Earth science, geoscience, a shoal is a natural submerged ridge, bank (geography), bank, or bar that consists of, or is covered by, sand or other unconsolidated material and rises from the bed of a body o ...

s located within the river channel. Silt-laden, greenish-tan

Lake Ihotry Lake Ihotry is the second largest lake of Madagascar. It is a closed saline lake in semi-arid southwestern part of Madagascar in the region of Atsimo-Andrefana. Its area varies seasonally, from 96 km2 to 112 km2. Roads It can be reache ...

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. In contrast, the northern, protected portion of the delta is dominated by tidal passes and

mangrove A mangrove is a shrub or tree that grows in coastal saline water, saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse, as a result of convergent evoluti ...

swamps.

Bridge

Works of a

Mangoky river The Mangoky River is a 564-kilometer-long (350 mi) river in Madagascar in the regions of Atsimo-Andrefana and Anosy. It is formed by the Mananantanana and the Matsiatra. Another important affluent is the Zomandao River. It rises in the Ce ...

bridge on the RN 9 will be shortly undertaken. It will be the longest bridge of Madagascar with 880 m.in French:RN9 - Le plus long pont de Madagascar va voir le jour
/ref>

References

Rivers of Madagascar Mozambique Channel Rivers of Atsimo-Andrefana Rivers of Anosy {{Madagascar-river-stub

Bridge

See also

References