Osimiri Rianila

Rianila bụ osimiri dị na mpaghara Atsinana na egwuregwu egwuregwu Madagascar .  Ọ na-esi n'ugwu dị n'etiti agbadata ka ọ banye n'Oké ọkụ India na nrida Brickaville na Andevoranto .  eserese ya kacha bụ Rongaronga, nke hel ya na nso Brickaville yana ire Iaroka na Vohitra .

Ndị nyocha ọdịda anyanwụ na-akpọbu osimiri ahụ Iharoka River (na Osimiri Jark na ebe ole na ole). History of Madagascar, p. 18 (1838) (example of English source, identifying it as the river just south of Andevoranto)

 Ntụaka 

 (in French) canaldespangalanes.over-blog.com - Descente de la Rianila