The Ramena River is a river of northwestern Madagascar in the region of Diana. It has its sources at the Maromokotra and is the main affluent of the Sambirano River.[1]

Ramena River
Tsaratanana Massif river system
Location
Country	Madagascar
Region	Diana
Physical characteristics
Source	at the Maromokotra peak
• location	Tsaratanana Massif, Diana
• elevation	2,500 m (8,200 ft)
Mouth	Sambirano River
• location	Diana
• coordinates	13°45′53″S 42°28′00″E
• elevation	27 m (89 ft)
Length	80 km (50 mi)
Basin size	1,080 km2 (420 sq mi)

References