The Mahavavy or Mahavavy-Nord River is a river of northern Madagascar in the region of Diana. It has its sources at the Maromokotra peak in the Tsaratanana Massif and flows north to the Indian Ocean. The main city along the river is Ambilobe.

Mahavavy River (north)
Mahavavy (north) river system
Location
Country	Madagascar
Region	Diana
Cities	Manambato, Ambilobe
Physical characteristics
Source	at the Maromokotra peak
• location	Tsaratanana Massif, Diana
• elevation	2,300 m (7,500 ft)
Mouth	Indian Ocean
• location	Diana
• coordinates	12°59′40″S 48°53′30″E
• elevation	0 m (0 ft)
Length	165 km (103 mi)
Basin size	3,300 km2 (1,300 sq mi)
Basin features
Tributaries
• left	Antsiatsia, Ambohipato

It crosses a fertile plain and the waters are used for the irrigation of 5500 ha, of mostly, cotton plantations. Its delta covers 500 km².[1]

References

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[de] Mahavavy du Nord