| Longueurs/km | Fleuves | % Correct |
|---|---|---|
| 3530 km | Volga | 97%
|
| 2824 km | Amour | 85%
|
| 4294 km | Léna | 74%
|
| 3700 km | Ob | 74%
|
| 3487 km | Ienisseï | 60%
|
| 2428 km | Oural | 35%
|
| 4258 km | Irtych | 19%
|
| 2989 km | Toungouska inférieure | 2%
|
| 2650 km | Viliouï | 1%
|
| 2450 km | Ichim | 0%
|