| River | Country | % Correct |
|---|---|---|
| Nile | Sudan | 100%
|
| Nile | Egypt | 99%
|
| Amazon | Rio de la Plata | Brazil | 97%
|
| Amazon | Rio de la Plata | Bolivia | 96%
|
| Congo | Nile | Democratic Republic of the Congo | 96%
|
| Nile | Ethiopia | 96%
|
| Niger | Niger | 96%
|
| Nile | South Sudan | 96%
|
| Danube | Rhine | Austria | 94%
|
| Niger | Nigeria | 94%
|
| Congo | Republic of the Congo | 94%
|
| Nile | Uganda | 94%
|
| Danube | Hungary | 93%
|
| Congo | Nile | Zambezi | Tanzania | 93%
|
| Danube | Rhine | Germany | 91%
|
| Rio de la Plata | Paraguay | 91%
|
| Congo | Nile | Rwanda | 91%
|
| Congo | Nile | Burundi | 90%
|
| Ganges/Brahmaputra | Mekong | Ob | China | 90%
|
| Niger | Chad | 88%
|
| Amazon | Colombia | 88%
|
| Nile | Kenya | 88%
|
| Amazon | Peru | 88%
|
| Danube | Romania | 88%
|
| Danube | Slovakia | 88%
|
| Ganges/Brahmaputra | India | 87%
|
| Rhine | Switzerland | 87%
|
| Rio de la Plata | Uruguay | 87%
|
| Congo | Zambezi | Zambia | 87%
|
| Rio de la Plata | Argentina | 85%
|
| Rhine | Netherlands | 85%
|
| Danube | Serbia | 85%
|
| Danube | Bulgaria | 82%
|
| Mekong | Cambodia | 82%
|
| Congo | Central African Republic | 82%
|
| Mekong | Myanmar | 82%
|
| Amazon | Venezuela | 82%
|
| Mekong | Laos | 81%
|
| Ob | Russia | 81%
|
| Mekong | Vietnam | 81%
|
| Rhine | Belgium | 79%
|
| Danube | Croatia | 79%
|
| Rhine | France | 79%
|
| Limpopo | Orange | South Africa | 79%
|
| Limpopo | Zambezi | Zimbabwe | 79%
|
| Ganges/Brahmaputra | Bangladesh | 78%
|
| Niger | Volta | Burkina Faso | 78%
|
| Nile | Eritrea | 78%
|
| Mekong | Thailand | 78%
|
| Congo | Zambezi | Angola | 76%
|
| Rhine | Luxembourg | 76%
|
| Niger | Senegal | Mali | 76%
|
| Limpopo | Zambezi | Mozambique | 76%
|
| Niger | Volta | Benin | 73%
|
| Limpopo | Orange | Zambezi | Botswana | 73%
|
| Amazon | Ecuador | 73%
|
| Volta | Ghana | 73%
|
| Amazon | Guyana | 73%
|
| Zambezi | Malawi | 73%
|
| Orange | Zambezi | Namibia | 73%
|
| Congo | Niger | Cameroon | 72%
|
| Rhine | Liechtenstein | 70%
|
| Ganges/Brahmaputra | Nepal | 70%
|
| Senegal | Senegal | 70%
|
| Danube | Ukraine | 70%
|
| Ganges/Brahmaputra | Bhutan | 69%
|
| Volta | Togo | 69%
|
| Ob | Syr Darya | Kazakhstan | 67%
|
| Ob | Mongolia | 66%
|
| Niger | Senegal | Guinea | 64%
|
| Danube | Moldova | 64%
|
| Rhine | Italy | 61%
|
| Amu Darya | Syr Darya | Uzbekistan | 61%
|
| Niger | Volta | Ivory Coast | 58%
|
| Senegal | Mauritania | 58%
|
| Amu Darya | Syr Darya | Tajikistan | 58%
|
| Syr Darya | Kyrgyzstan | 57%
|
| Orange | Lesotho | 57%
|
| Amu Darya | Turkmenistan | 57%
|
| Amu Darya | Afghanistan | 55%
|
| Niger | Algeria | 51%
|
| Aras/Kura | Iran | 51%
|
| Aras/Kura | Turkey | 48%
|
| Aras/Kura | Armenia | 36%
|
| Aras/Kura | Georgia | 36%
|
| Aras/Kura | Azerbaijan | 34%
|