Mahavavy River
Kogin Mahavavy ko Mahavavy-Nord kogin arewacin Madagascar ne a yankin Diana. Tana da tushenta a kololuwar Maromokotra a cikin Tsaratanana Massif kuma tana gudana zuwa arewa zuwa Tekun Indiya. Babban birnin da ke gefen kogin shine Ambilobe.

Yana ƙetara wani fili mai albarka kuma ana amfani da ruwan don ban ruwa na hekta 5500, galibi,gonakin auduga . Yankin Delta ya ƙunshi 500

Nassoshi 

Shafuka masu fassarorin da ba'a duba ba