| Country | River | % Correct |
|---|---|---|
| Bolivia | Brazil | Colombia | +4 others | Amazon | 95%
|
| Canada | United States | Mississippi | 92%
|
| Burundi | Congo, D. R. of | Egypt | +8 others | Nile | 92%
|
| Austria | Bulgaria | Croatia | +7 others | Danube | 89%
|
| Angola | Cameroon | Central African Republic | +2 others | Congo | 83%
|
| Cambodia | Laos | Myanmar | +2 others | Mekong | 83%
|
| Belgium | France | Italy | +4 others | Rhine | 83%
|
| Algeria | Benin | Burkina Faso | +6 others | Niger | 80%
|
| China | Yangtze | 80%
|
| Iraq | Syria | Turkey | Euphrates | 68%
|
| Pakistan | Indus | 68%
|
| Botswana | Malawi | Mozambique | +2 others | Zambezi | 63%
|
| Australia | Murray | 56%
|
| Lesotho | South Africa | Orange | 55%
|
| Mexico | Rio Grande | 54%
|
| Kazakhstan | Ob | 53%
|
| Argentina | Paraguay | Uruguay | Parana | 52%
|
| Israel | Jordan | Jordan | 50%
|
| Poland | Vistula | 48%
|
| Bangladesh | Bhutan | India | Nepal | Brahmaputra | 47%
|
| Belarus | Dnieper | 38%
|
| Czech Republic | Elbe | 38%
|
| Portugal | Spain | Tagus | 38%
|
| Mauritania | Senegal | Senegal | 37%
|
| Gambia | Gambia | 34%
|
| Montenegro | Lim | 32%
|
| Ghana | Togo | Volta | 32%
|
| Afghanistan | Turkmenistan | Amu Darya | 29%
|
| United Kingdom | Severn | 29%
|
| Mongolia | Russia | Yenisei | 27%
|
| Ireland | Shannon | 26%
|
| Slovenia | Sava | 24%
|
| Latvia | Daugava | 21%
|
| Norway | Glomma | 14%
|
| Morocco | Draa | 13%
|
| Iran | Helmand | 11%
|
| Mauritius | Grand South East | 10%
|
| Albania | Drin | 8%
|
| Macedonia | Vardar | 8%
|
| Azerbaijan | Georgia | Kura | 7%
|
| Lithuania | Nemunas | 7%
|
| Belize | Belize | 6%
|
| New Zealand | Solomon Islands | Waikato | 6%
|
| Gabon | Ogooue | 5%
|
| Papua New Guinea | Sepik | 5%
|
| Finland | Kemijoki | 4%
|
| Chile | Loa | 4%
|
| Seychelles | Victoria | 4%
|
| Indonesia | Kapuas | 3%
|
| Armenia | Aras | 2%
|
| Bosnia and Herzegovina | Bosna | 2%
|
| Brunei | Brunei | 2%
|
| Sweden | Dalalven | 2%
|
| Kyrgyzstan | Tajikistan | Uzbekistan | Naryn | 2%
|
| Costa Rica | San Juan | 2%
|
| San Marino | San Marino | 2%
|
| North Korea | Taedong | 2%
|
| Barbados | Bum | 1%
|
| Philippines | Cagayan | 1%
|
| Grenada | Great | 1%
|
| Libya | Great Man-Made | 1%
|
| Lebanon | Litani | 1%
|
| Swaziland | Maputo | 1%
|
| Haiti | Artibonite | 0%
|
| Cuba | Cauto | 0%
|
| Liberia | Cavalla | 0%
|
| Panama | Chucunaque | 0%
|
| Nicaragua | Coco | 0%
|
| Saint Vincent | Colonarie | 0%
|
| Guinea-Bissau | Corubal | 0%
|
| Suriname | Courantyne | 0%
|
| Andorra | Envalira | 0%
|
| Denmark | Gudena | 0%
|
| Greece | Haliacmon | 0%
|
| Singapore | Kallang | 0%
|
| El Salvador | Lempa | 0%
|
| Sri Lanka | Mahaweli | 0%
|
| Madagascar | Mangoky | 0%
|
| Tunisia | Medjerda | 0%
|
| Guatemala | Motagua | 0%
|
| South Korea | Nakdong | 0%
|
| Trinidad and Tobago | Ortoire | 0%
|
| Dominica | Pagua | 0%
|
| Cyprus | Pedieos | 0%
|
| Malaysia | Rajang | 0%
|
| Sao Tome and Principe | Rio Agua Grande | 0%
|
| Equatorial Guinea | Rio Benito | 0%
|
| Jamaica | Rio Minho | 0%
|
| Honduras | Rio Pataca | 0%
|
| Sierra Leone | Rokel | 0%
|
| Saint Lucia | Roseau | 0%
|
| Vanuatu | Sarakata | 0%
|
| Somalia | Shabelle | 0%
|
| Japan | Shinano | 0%
|
| Fiji | Sigatoka | 0%
|
| Iceland | Thjorsa | 0%
|
| East Timor | Tono | 0%
|
| Samoa | Vaisigano | 0%
|
| Estonia | Vohandu | 0%
|
| Kosovo | White Drin | 0%
|
| Dominican Republic | Yaque del Norte | 0%
|
| Taiwan | Zhuoshui | 0%
|