| River | Countries | % Correct |
|---|---|---|
| Nile | Egypt | Sudan | South Sudan | Uganda | 100%
|
| Amazon | Brazil | Peru | 99%
|
| Danube | Romania | Ukraine | Moldova | Serbia | Croatia | Hungary | Slovakia | Austria | Germany | 98%
|
| Rhine | Netherlands | Germany | France | Austria | Liechtenstein | Switzerland | 97%
|
| Mekong | China | Myanmar | Laos | Thailand | Cambodia | Vietnam | 95%
|
| Zambezi | Mozambique | Zambia | Zimbabwe | Botswana | Namibia | Angola | D.R. Congo | 93%
|
| Rio Grande | United States | Mexico | 93%
|
| Euphrates | Iraq | Syria | Turkey | 92%
|
| Indus | Pakistan | India | China | 90%
|
| St. Lawrence | United States | Canada | 88%
|
| Brahmaputra | Bangladesh | India | China | 85%
|
| Dniper | Ukraine | Belarus | Russia | 79%
|
| Rhône | France | Switzerland | 78%
|
| Parana | Argentina | Paraguay | Brazil | 72%
|
| Limpopo | Mozambique | Zimbabwe | Botswana | South Africa | 60%
|
| Amur | Russia | China | 60%
|
| Orinoco | Venezuela | Colombia | 54%
|
| Tagus | Portugal | Spain | 39%
|
| Drava | Croatia | Hungary | Slovenia | Austria | Italy | 35%
|
| Syr Darya | Kazakhstan | Uzbekistan | Tajikistan | Kyrgyzstan | 33%
|