| River | % Correct |
|---|---|
| Congo | 98%
|
| Thames | 98%
|
| Rhine | 96%
|
| Rio Grande | 96%
|
| Seine | 96%
|
| Euphrates | 93%
|
| St. Lawrence | 87%
|
| Dnieper | 85%
|
| Hudson | 85%
|
| Río de la Plata | 85%
|
| Yukon | 82%
|
| Loire | 75%
|
| Murray | 73%
|
| Ob | 73%
|
| Amur | 69%
|
| Elbe | 67%
|
| Columbia | 65%
|
| Volta | 55%
|
| Yenisei | 53%
|
| Tagus | 49%
|
| Ural | 38%
|