The Onive River is a river in eastern

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 ...

. It flows down from the Ankaratra massif, and is the largest tributary of the

Mangoro River The Mangoro River is the largest river on the east coast of Madagascar by basin size and water volume, and is 300 km in length. Overview The Mangoro begins northeast of the town of Anjozorobe in the Analamanga region, at approximately 1,1 ...

.Campbell, Gwynn
David Griffiths and the Missionary "History of Madagascar"
p. 488-89 (

Brill Brill may refer to: Places * Brielle (sometimes "Den Briel"), a town in the western Netherlands * Brill, Buckinghamshire, a village in England * Brill, Cornwall, a small village to the west of Constantine, Cornwall, UK * Brill, Wisconsin, an un ...

2012) (citing Aldegheri, Marius. ''The Rivers and Streams on Madagascar'', in Battistini, Rene & G. Richard-Vindard (ed.), ''Biogeography and Ecology in Madagascar'' (1972)) Notable waterfalls, with a 30m vertical drop, are located southwest of the village of Tsinjoarivo.Madagascar, 2008-2009
p. 245 (

Le Petit Futé Petit Futé (founded 1976) is a series of French travel guides broadly equivalent to the Lonely Planet Lonely Planet is a travel guide book publisher. Founded in Australia in 1973, the company has printed over 150 million books. History ...

2008) (in French)

References

Rivers of Madagascar {{Madagascar-river-stub