| River | % Correct |
|---|---|
| Volga | 95%
|
| Ob | 86%
|
| Lena | 84%
|
| Don | 78%
|
| Amur | 74%
|
| Yenesei | 74%
|
| Ural | 61%
|
| Dnieper | 56%
|
| Neva | 45%
|
| Irtysh | 42%
|
| Kama | 37%
|
| Kolyma | 32%
|
| Pechora | 32%
|
| Oka | 30%
|
| Oka | 30%
|
| Angara | 29%
|
| Northern Dvina | 27%
|
| Anadyr | 25%
|
| Daugava | 25%
|
| Kamchatka | 21%
|
| Indigirka | 18%
|
| Aldan | 17%
|
| Tobol | 14%
|
| Tom | 14%
|
| Vilyuy | 13%
|
| Khatanga | 10%
|
| Svir | 10%
|
| Selenga | 9%
|
| Kem | 8%
|
| Northern Tunguska | 8%
|
| Olenyok | 8%
|
| Vychegda | 8%
|
| Sukhona | 6%
|
| Taz | 5%
|
| Vuoksi | 5%
|