| River | % Correct |
|---|---|
| Congo | 98%
|
| Thames | 98%
|
| Rhine | 96%
|
| Rio Grande | 96%
|
| Seine | 96%
|
| Euphrates | 93%
|
| St. Lawrence | 88%
|
| Dnieper | 86%
|
| Hudson | 86%
|
| Río de la Plata | 86%
|
| Yukon | 82%
|
| Loire | 75%
|
| Murray | 73%
|
| Ob | 71%
|
| Amur | 70%
|
| Elbe | 68%
|
| Columbia | 66%
|
| Volta | 54%
|
| Yenisei | 52%
|
| Tagus | 48%
|
| Ural | 39%
|