| Manajeba River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Madagascar |
| Subdivision Type3: | Region |
| Subdivision Name3: | Diana |
| Subdivision Type5: | City |
| Subdivision Name5: | Marivorahona |
| Length: | 248km (154miles) |
| Discharge1 Location: | Near mouth |
| Discharge1 Avg: | (Period: 1971–2000)[1] |
| Discharge2 Location: | Marivorahona (1980–1983) |
| Discharge2 Min: | 0.497m3/s |
| Discharge2 Avg: | 24.2m3/s- (1980–1983) |
| Discharge2 Max: | 220m3/s |
| Source1: | Tsaratanana Massif |
| Source1 Location: | Diana |
| Source1 Elevation: | 1785m (5,856feet) |
| Mouth Location: | Indian Ocean |
| Mouth Coordinates: | -12.8833°N 48.9417°W |
| Mouth Elevation: | 0m (00feet) |
| Basin Size: | 2198.6km2[2] |
The Manajeba River is located in northern Madagascar. Its sources are situated near in the Tsaratanana Massif, it crosses the Route nationale 6 near Tanambao Marivorahona and flows into the Indian Ocean.
In January 2012 the bridge of 32 meters of the Route nationale 6 collapsed between Tanambao Marivorahona and the village of Marivorahona.[3]