| Country | River | % Correct |
|---|---|---|
| United States of America | Colorado | Mississippi | Missouri | Rio Grande | Saint Lawrence | Yukon | 98%
|
| Brazil | Amazon | Apa | Iguazu | Juruá | Mamoré | Paraguay | Paraná | Purus | Río Negro | Uruguay | 97%
|
| Colombia | Amazon | Cauca | Magdalena | Orinoco | Rio Negro | 97%
|
| South Sudan | Adar | Bahr al-Arab | Bahr el Ghazal | White Nile | 96%
|
| Sudan | Bahr al-Arab | Barka | Gash | Nile | Tekezē | 96%
|
| Ethiopia | Blue Nile | Dawa | Gash | Genale | Juba | Tekezē | 96%
|
| Kenya | Dawa | Juba | Mara | Tana | Turkwel | White Nile | 96%
|
| Uganda | Kafu | Kagera | Turkwel | White Nile | 96%
|
| Tanzania | Kagera | Mara | Nyabarongo | Songwe | White Nile | 96%
|
| Egypt | Nile | 96%
|
| Peru | Amazon | Curaray | Juruá | Pastaza | Purus | Napo | 95%
|
| Austria | Danube | Drava | Inn | Mur | Rhine | Samina | Tisza | 95%
|
| Germany | Danube | Elbe | IJssel | Inn | Moselle | Oder | Rhine | Sauer | Tisza | 95%
|
| China | Brahmaputra | Ganges | Ili | Irtysh | Indus | Kherlen | Mekong | Salween | Yalu | Yangtze | 93%
|
| Croatia | Danube | Drava | Mur | Neretva | Sava | Tisza | 93%
|
| Hungary | Danube | Ipel | Mur | Mureș | Tisza | 93%
|
| Ukraine | Danube | Dnieper | Dniester | Prut | Tisza | 92%
|
| Moldova | Danube | Dniester | Prut | Tisza | 92%
|
| Serbia | Danube | Drina | Ibar | Pčinja | Sava | Tisza | 92%
|
| Slovakia | Danube | Ipe | Tisza | Váh | 92%
|
| Bulgaria | Danube | Maritsa | Tisza | 92%
|
| Romania | Danube | Mureș | Olt | Prut | Tisza | 92%
|
| France | Alzette | Loire | Maroni | Moselle | Rhine | Rhône | Scheldt | Seine | Yser | 91%
|
| India | Brahmaputra | Chenab | Drangme | Gandaki | Ganges | Indus | Jhelum | Padma | Ravi | 86%
|
| Russia | Daugava | Dnieper | Lena | Nemunas | Ob | Terek | Ural | Volga | 86%
|
| Republic of the Congo | Congo | Djoué | Ogooué | 85%
|
| Democratic Republic of the Congo | Congo | Oubangui | Ruzizi | Ubangi | 85%
|
| Syria | Euphrates | Jordan | Tigris | 82%
|
| Laos | Mã | Mekong | Nam Ou | 82%
|
| Vietnam | Mã | Mekong | Nam Ou | Saigon | 82%
|
| Ivory Coast | Bandama | Cavalla | Cestos | Niger | Tano | Volta | 81%
|
| Mali | Bani | Niger | Senegal | Volta | 81%
|
| Guinea | Cavalla | Cestos | Corubal | Gambia | Geba | Moa | Niger | Saint Paul | Senegal | 81%
|
| Benin | Mono | Niger | Oti | Volta | 81%
|
| Burkina Faso | Niger | Oti | Tano | Volta | 81%
|
| Switzerland | Aare | Inn | Rhine | Rhône | 80%
|
| Turkey | Akhuryan | Aras | Euphrates | Kizil Irmak | Kura | Maritsa | Tigris | Zab | 80%
|
| Cameroon | Benue | Chari | Niger | Sanaga | 80%
|
| Nigeria | Benue | Komadougou | Logone | Niger | Yobe | 80%
|
| Chad | Chari | Logone | Niger | 80%
|
| Algeria | Chelif | Drâa | Medjerda | Niger | 80%
|
| Niger | Komadougou | Logone | Niger | Yobe | 80%
|
| Iraq | Euphrates | Tigris | Zab | 79%
|
| Bangladesh | Brahmaputra | Ganges | Padma | 78%
|
| Netherlands | IJssel | Meuse | Rhine | Scheldt | Waal | 78%
|
| Mexico | Balsas | Colorado | Lerma | Rio Grande | Usumacinta | 77%
|
| Liechtenstein | Rhine | Samina | 77%
|
| Myanmar | Chindwin | Mekong | Irrawaddy | Salween | 75%
|
| Thailand | Mae Klong | Khwae Yai | Mekong | Ping | Salween | 75%
|
| Cambodia | Mekong | Saigon | Tonle Sap | 75%
|
| Italy | Adige | Arno | Po | Soča | Tiber | 74%
|
| Nepal | Arun | Gandaki | Ganges | Kosi | 74%
|
| Canada | Churchill | Fraser | Mackenzie | Ottawa | Saint Lawrence | Yukon | 74%
|
| Namibia | Chobe | Okavango | Orange | Zambezi | 70%
|
| Pakistan | Chenab | Indus | Jhelum | Kabul | Ravi | 67%
|
| Botswana | Chobe | Limpopo | Okavango | Zambezi | 67%
|
| Zimbabwe | Chobe | Limpopo | Munyati | Zambezi | 66%
|
| Mozambique | Limpopo | Maputo | Shire | Usutu | Zambezi | 66%
|
| Angola | Cuanza | Okavango | Zambezi | 65%
|
| Zambia | Chobe | Kafue | Luangwa | Zambezi | 64%
|
| Argentina | Iguazu | Paraguay | Paraná | Pilcomayo | Uruguay | 57%
|
| South Africa | Caledon | Gamtoos | Limpopo | Maputo | Orange | Usutu | Vaal | 56%
|
| Paraguay | Apa | Paraguay | Paraná | Pilcomayo | 55%
|
| Kazakhstan | Chu | Ili | Irtysh | Ishim | Ob | Syr Darya | Talas | Ural | 54%
|
| Poland | Narew | Oder | Vistula | Warta | 53%
|
| Lesotho | Caledon | Makhaleng | Orange | 50%
|
| Slovenia | Drava | Mur | Sava | Soča | 50%
|
| Belarus | Daugava | Dnieper | Memel | Narew | Nemunas | 48%
|
| Spain | Douro | Ebro | Guadiana | Gran Valira | Júcar | Minho | Tagus | 45%
|
| Czech Republic | Elbe | Moldau | Morava | Oder | 45%
|
| Senegal | Gambia | Geba | Saloum | Senegal | 45%
|
| Venezuela | Caroní | Essequibo | Orinoco | Rio Negro | Ventuari | 44%
|
| Israel | Hasbani | Jordan | Kishon | 43%
|
| Lebanon | Hasbani | Jordan | Litani | 43%
|
| Jordan | Jordan | 43%
|
| Afghanistan | Amu Darya | Hari | Helmand | Kabul | Panj | 40%
|
| Tajikistan | Amu Darya | Panj | Syr Darya | Zeravshan | 40%
|
| Uzbekistan | Amu Darya | Naryn | Syr Darya | Zeravshan | 39%
|
| Uruguay | Arapey Chico | Río Negro | Uruguay | 39%
|
| Portugal | Douro | Guadiana | Minho | Mondego | Tagus | 39%
|
| Mongolia | Irtysh | Kherlen | Ob | Orhon | Selenge | 39%
|
| Turkmenistan | Amu Darya | Atrek | Hari | 37%
|
| Kosovo | Drin | Ibar | Radika | Sitnica | 34%
|
| Mauritania | Gorgol | Senegal | 34%
|
| Bolivia | Guaporé | Madeira | Mamoré | Paraguay | Pilcomayo | 34%
|
| Montenegro | Drina | Moraca | Ibar | Tara | 33%
|
| Gambia | Gambia | 29%
|
| Ghana | Densu | Oti | Tanoi | Volta | 27%
|
| Togo | Mono | Oti | Volta | 27%
|
| Belgium | Meuse | Sauer | Scheldt | Yser | 26%
|
| Kyrgyzstan | Chu | Naryn | Syr Darya | Talas | 25%
|
| North Korea | Han | Imjin | Taedong | Tumen | Yalu | 22%
|
| Bosnia and Herzegovina | Drina | Neretva | Sava | Tara | 21%
|
| Latvia | Daugava | Gauja | Lielupe | Venta | 20%
|
| South Korea | Geum | Han | Imjin | Yeongsan | 18%
|
| Luxembourg | Alzette | Moselle | Sauer | 17%
|
| Central African Republic | Chari | Oubangui | Ubangi | 17%
|
| Iran | Atrek | Aras | Helmand | Karkheh | Karun | 16%
|
| North Macedonia | Drin | Pčinja | Radika | Vardar | 16%
|
| Greece | Aliakmon | Maritsa | Vardar | Vjosa | 15%
|
| Albania | Devoll | Drin | Vjosa | 15%
|
| Lithuania | Lielupe | Memel | Nemunas | Venta | 15%
|
| Azerbaijan | Aras | Arpa | Kura | 14%
|
| Somalia | Dawa | Genale | Juba | 14%
|
| Georgia | Kura | Mtkvari | Rioni | Terek | 14%
|
| Guatemala | Belize | Lempa | Usumacinta | 12%
|
| Morocco | Dadès | Drâa | Oum Er-Rbia | Sebou | 12%
|
| Ecuador | Aguarico | Curaray | Pastaza | Napo | 11%
|
| Armenia | Akhuryan | Aras | Arpa | 11%
|
| Suriname | Coppename | Gran Rio | Maroni | Suriname | 11%
|
| Eritrea | Barka | Gash | Tekezē | 10%
|
| Belize | Belize | Macal | 10%
|
| Guyana | Berbice | Demerara | Essequibo | 10%
|
| Liberia | Cavalla | Cestos | Mano | Moa | Saint Paul | 10%
|
| Nicaragua | Coco | San Juan | 10%
|
| Rwanda | Kagera | Mwogo | Nyabarongo | Ruzizi | 10%
|
| Burundi | Kagera | Nyabarongo | Ruzizi | 10%
|
| Norway | Begna | Glomma | Numedalslågen | Paatsjoki | 9%
|
| Guinea-Bissau | Cacheu | Corubal | Geba | 9%
|
| Honduras | Coco | Lempa | Patuca | 9%
|
| Malawi | Lilongwe | Shire | Songwe | 9%
|
| Sierra Leone | Mano | Moa | Rokel | 9%
|
| Tunisia | Medjerda | Oued Sejenane | Oued Zitoun | 9%
|
| Costa Rica | Pacuare | San Juan | Savegre | Sixaola | 9%
|
| El salvador | Lempa | 8%
|
| Eswatini | Maputo | Mbabane | Usutu | 8%
|
| Gabon | Ogooué | Mbini | Muni | Utamboni | 8%
|
| Panama | Chagres | Chepo | Sixaola | 7%
|
| Sweden | Göta | Kalix | Pite | Torne | 7%
|
| Bhutan | Drangme | 6%
|
| Finland | Kemijoki | Kymi | Ounasjoki | Paatsjoki | Torne | 6%
|
| Equatorial Guinea | Mbini | Muni | Utamboni | 6%
|
| Chile | Biobío | Loa | Maipo | 4%
|
| Andorra | Gran Valira | 3%
|
| Estonia | Ahja | Kasari | Pärnu | Pedja | 2%
|
| Malaysia | Belait | Klang | Malacca | Muda | Pahang | Rajang | 2%
|
| Denmark | Gudenå | Skjern | Storå | 2%
|