Ony

Ny ony dia korian-drano mivarina any an-dranomasina. Indreto ny ony folo lava indrindra eran-tany:

1. Nily (anelanelan' ny 6 499 sy 6 718 km)
2. Amazôna (anelanelan' ny 6 259 et 6 800 km),
3. Yangtse (Chang Jiang) (6 380 km)
4. Mississippi-Missouri (6 210 km),
5. Ienissei-Angara (5 550 km)
6. Ony Mavo (5 464 km)
7. Ob-Irtych (5 410 km)
8. Congo (anelanelan' ny 4 380 km 4 670 km)
9. Amour (4 354 km)
10. Mekong (anelanelan' ny 4 350 sy 4 909 km)

Fivarinan' ny ony Tsiribihina an-dranomasina

Jereo koa

Ranomasira

• Ranomasina
• Hoala
• Helodrano
• Andilan-dranomasina

Ranovory

• Farihy
• Dobo
• Heniheny
• Honahona
• Riakasia

Ranomandeha

• Renirano
• Ony
• Sakelidrano
• Loharano

• Voambolan' ny jeôgrafia