| River | Country | % Correct |
|---|---|---|
| Niger | Benin | Guinea | Mali | Niger | Nigeria | 99%
|
| Amazon | Brazil | Colombia | Peru | 99%
|
| Nile
* not counting Blue Nile | Uganda | South Sudan | Sudan | Egypt | 97%
|
| Mekong | Cambodia | China | Laos | Myanmar | Thailand | Vietnam | 95%
|
| Danube | Austria | Bulgaria | Croatia | Germany | Hungary | Moldova | Romania | Serbia | Slovakia | Ukraine | 94%
|
| Rhine | Austria | France | Germany | Liechtenstein | Netherlands | Switzerland | 93%
|
| Rio Grande | Mexico | United States | 87%
|
| Brahmaputra | China | India | Bangladesh | 82%
|
| Yukon | Canada | United States | 81%
|
| Zambezi | Angola | Botswana | Mozambique | Namibia | Zambia | Zimbabwe | 75%
|
| Dnieper | Belarus | Russia | Ukraine | 73%
|
| Oder | Czech Republic | Germany | Poland | 62%
|
| Amur | China | Russia | 51%
|
| Orange | Lesotho | Namibia | South Africa | 46%
|
| Volta | Burkina Faso | Ghana | Ivory Coast | 29%
|
| Amu Darya | Afghanistan | Tajikistan | Turkmenistan | Uzbekistan | 25%
|
| Tisa | Hungary | Romania | Serbia | Slovakia | Ukraine | 24%
|