| Answer | % Correct |
|---|---|
| Danube | 90%
|
| Loire | 88%
|
| Mississippi | 88%
|
| Congo | 87%
|
| Mekong | 85%
|
| Rhine | 85%
|
| Colorado | 83%
|
| Nile | 83%
|
| Euphrates | 80%
|
| Niger | 78%
|
| Ohio | 78%
|
| Yangtze | 75%
|
| Amazon | 73%
|
| Dnieper | 73%
|
| Indus | 72%
|
| Rio Grande | 72%
|
| Tigris | 72%
|
| Volga | 72%
|
| Yellow River | 72%
|
| Ganges | 68%
|
| Blue Nile | 67%
|
| Orange | 65%
|
| Vistula | 63%
|
| Parana | 60%
|
| Saint Lawrence | 58%
|
| Yukon | 55%
|
| Columbia | 53%
|
| Zambezi | 53%
|
| Orinoco | 50%
|
| Pearl River | 50%
|
| Tagus | 50%
|
| Brahmaputra | 47%
|
| Murray | 47%
|
| Amur | 43%
|
| Ob | 27%
|
| Lena | 22%
|