| km² | Bassin fluvial | % Correct |
|---|---|---|
| 802 k | Danube | 100%
|
| 75.4 k | Seine | 100%
|
| 117 k | Loire | 98%
|
| 185 k | Rhin | 98%
|
| 98.1 k | Rhône | 98%
|
| 1433 k | Volga | 90%
|
| 73.7 k | Pô | 85%
|
| 148 k | Elbe | 65%
|
| 193 k | Vistule | 63%
|
| 510 k | Dniepr | 60%
|
| 437 k | Don | 53%
|
| 70.8 k | Tage | 53%
|
| 97.3 k | Douro | 50%
|
| 84.8 k | Èbre | 45%
|
| 119 k | Oder | 43%
|
| 73.2 k | Dniestr | 35%
|
| 211 k | Oural | 33%
|
| 281 k | Neva | 28%
|
| 85.6 k | Daugava | 20%
|
| 357 k | Dvina septentrionale | 5%
|
| 92.5 k | Niémen | 5%
|
| 78.0 k | Mezen | 0%
|
| 322 k | Petchora | 0%
|