| Answer | % Correct |
|---|---|
| Danube | 91%
|
| Loire | 89%
|
| Mississippi | 89%
|
| Congo | 88%
|
| Mekong | 86%
|
| Nile | 86%
|
| Rhine | 86%
|
| Colorado | 84%
|
| Ohio | 82%
|
| Euphrates | 80%
|
| Niger | 80%
|
| Tigris | 75%
|
| Yangtze | 75%
|
| Amazon | 73%
|
| Dnieper | 73%
|
| Blue Nile | 71%
|
| Ganges | 71%
|
| Indus | 71%
|
| Rio Grande | 71%
|
| Volga | 71%
|
| Yellow River | 71%
|
| Orange | 64%
|
| Vistula | 63%
|
| Parana | 61%
|
| Saint Lawrence | 59%
|
| Yukon | 55%
|
| Zambezi | 55%
|
| Columbia | 54%
|
| Tagus | 50%
|
| Brahmaputra | 48%
|
| Orinoco | 48%
|
| Pearl River | 48%
|
| Murray | 46%
|
| Amur | 45%
|
| Ob | 25%
|
| Lena | 21%
|