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

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

Jereo koa 
Ranomasira
 Ranomasina
 Hoala
 Helodrano
 Andilan-dranomasina
Ranovory
 Farihy
 Dobo
 Heniheny
 Honahona
 Riakasia
Ranomandeha
 Renirano
 Ony
 Sakelidrano
 Loharano

 Voambolan' ny jeôgrafia