| Length | Country | River | % Correct |
|---|---|---|---|
| 4700 km | D. R. Congo | Congo | 97%
|
| 6300 km | China | Yangtze | 97%
|
| 2430 km | India | Ganges | 94%
|
| 3130 km | Brazil | Amazon | 91%
|
| 3300 km | Peru | Amazon | 88%
|
| 2640 km | Pakistan | Indus | 88%
|
| 2400 km | Sudan | Nile | 88%
|
| 2050 km | Egypt | Nile | 85%
|
| 3770 km | United States | Missouri | 82%
|
| 2510 km | Australia | Murray | 82%
|
| 1210 km | Ukraine | Dnieper | 76%
|
| 4400 km | Russia | Lena | 76%
|
| 2080 km | Mali | Niger | 76%
|
| 1600 km | South Sudan | Nile | 76%
|
| 2020 km | Mexico | Río Grande | 76%
|
| 1080 km | Romania | Danube | 74%
|
| 1650 km | Laos | Mekong | 74%
|
| 1100 km | Nigeria | Niger | 74%
|
| 1800 km | South Africa | Orange | 74%
|
| 2610 km | Argentina | Paraná | 74%
|
| 1410 km | Iraq | Tigris | 74%
|
| 1390 km | Zambia | Zambezi | 74%
|
| 1010 km | France | Loire | 71%
|
| 780 km | Germany | Rhine | 71%
|
| 1150 km | Zimbabwe | Zambezi | 71%
|
| 950 km | Thailand | Mekong | 68%
|
| 930 km | Spain | Ebro | 65%
|
| 650 km | Italy | Po | 65%
|
| 500 km | Republic of the Congo | Congo | 62%
|
| 600 km | Niger | Niger | 62%
|
| 2250 km | Venezuela | Orinoco | 62%
|
| 1480 km | Paraguay | Paraná | 62%
|
| 470 km | Switzerland | Rhine | 62%
|
| 1050 km | Poland | Vistula | 62%
|
| 900 km | Mozambique | Zambezi | 59%
|
| 420 km | Serbia | Danube | 56%
|
| 2170 km | Myanmar | Irrawaddy | 56%
|
| 1740 km | Canada | Mackenzie | 56%
|
| 540 km | Cambodia | Mekong | 56%
|
| 800 km | Uganda | Nile | 56%
|
| 810 km | Ethiopia | Blue Nile | 53%
|
| 530 km | Bulgaria | Danube | 53%
|
| 480 km | Gambia | Gambia | 53%
|
| 830 km | Senegal | Senegal | 53%
|
| 350 km | United Kingdom | Severn | 50%
|
| 430 km | Uruguay | Uruguay | 50%
|
| 500 km | Syria | Euphrates | 47%
|
| 240 km | Israel | Jordan | 47%
|
| 360 km | Ireland | Shannon | 47%
|
| 240 km | Jordan | Jordan | 44%
|
| 560 km | Croatia | Sava | 44%
|
| 360 km | Bosnia and Herzegovina | Sava | 41%
|
| 600 km | Belarus | Dnieper | 38%
|
| 500 km | Moldova | Dniester | 38%
|
| 300 km | Portugal | Douro | 38%
|
| 200 km | Belgium | Meuse | 38%
|
| 400 km | Lesotho | Orange | 38%
|
| 220 km | Slovenia | Sava | 38%
|
| 780 km | Ghana | Volta | 38%
|
| 620 km | Burkina Faso | Black Volta | 35%
|
| 200 km | Netherlands | Meuse | 35%
|
| 600 km | Turkmenistan | Amu Darya | 32%
|
| 600 km | Uzbekistan | Amu Darya | 32%
|
| 620 km | Norway | Glomma | 32%
|
| 420 km | Austria | Inn | 32%
|
| 830 km | Mauritania | Senegal | 32%
|
| 2050 km | Bolivia | Madeira | 29%
|
| 1530 km | Colombia | Magdalena | 29%
|
| 400 km | Guinea | Niger | 29%
|
| 920 km | Tajikistan | Panj | 29%
|
| 20 km | Liechtenstein | Rhine | 29%
|
| 290 km | Belize | Belize | 26%
|
| 1710 km | Kazakhstan | Irtysh | 26%
|
| 600 km | Hungary | Tisza | 26%
|
| 430 km | Czech Republic | Vltava | 26%
|
| 1100 km | Afghanistan | Helmand | 24%
|
| 850 km | Azerbaijan | Kura | 24%
|
| 760 km | Kyrgyzstan | Naryn | 24%
|
| 560 km | Central African Republic | Ubangi | 24%
|
| 1140 km | Indonesia | Kapuas | 21%
|
| 550 km | Finland | Kemijoki | 21%
|
| 1360 km | Turkey | Kızılırmak | 21%
|
| 590 km | Vietnam | Red | 21%
|
| 1000 km | Papua New Guinea | Sepik | 21%
|
| 1100 km | Morocco | Draa | 18%
|
| 1010 km | Guyana | Essequibo | 18%
|
| 450 km | Georgia | Kura | 18%
|
| 520 km | Sweden | Dalälven | 15%
|
| 450 km | Lithuania | Neman | 15%
|
| 900 km | Somalia | Shebelle | 15%
|
| 310 km | North Macedonia | Vardar | 15%
|
| 700 km | Algeria | Chelif | 12%
|
| 500 km | Honduras | Coco | 12%
|
| 150 km | Denmark | Gudenå | 12%
|
| 130 km | Costa Rica | San Juan | 12%
|
| 90 km | Luxembourg | Sauer | 12%
|
| 1000 km | Kenya | Tana | 12%
|
| 400 km | Slovakia | Váh | 12%
|
| 790 km | North Korea | Yalu | 12%
|
| 950 km | Chad | Chari | 9%
|
| 780 km | Nicaragua | Coco | 9%
|
| 3 km | Barbados | Constitution | 9%
|
| 970 km | Angola | Kwanza | 9%
|
| 260 km | Bangladesh | Meghna | 9%
|
| 1000 km | Gabon | Ogooué | 9%
|
| 1120 km | Mongolia | Orkhon | 9%
|
| 140 km | Estonia | Parnu | 9%
|
| 890 km | Cameroon | Sanaga | 9%
|
| 370 km | Japan | Shinano | 9%
|
| 200 km | Armenia | Aras | 6%
|
| 300 km | Haiti | Artibonite | 6%
|
| 500 km | Philippines | Cagayan | 6%
|
| 370 km | Cuba | Cauto | 6%
|
| 650 km | Namibia | Fish | 6%
|
| 460 km | Latvia | Gauja | 6%
|
| 5 km | Saint Kitts and Nevis | Grandee Ghut | 6%
|
| 30 km | Andorra | Gran Valira | 6%
|
| 15 km | Grenada | Great | 6%
|
| 300 km | Greece | Haliacmon | 6%
|
| 950 km | Iran | Karun | 6%
|
| 80 km | East Timor | Laclo | 6%
|
| 20 km | Dominica | Layou | 6%
|
| 100 km | El Salvador | Lempa | 6%
|
| 160 km | Eswatini | Maputo | 6%
|
| 520 km | South Korea | Nakdong | 6%
|
| 60 km | Trinidad and Tobago | Ortoire | 6%
|
| 300 km | Togo | Oti | 6%
|
| 100 km | Cyprus | Pedieos | 6%
|
| 150 km | Fiji | Rewa | 6%
|
| 90 km | Jamaica | Rio Minho | 6%
|
| 250 km | Burundi | Ruvubu | 6%
|
| 10 km | San Marino | San Marino | 6%
|
| 20 km | Cape Verde | Seca | 6%
|
| 300 km | Malawi | Shire | 6%
|
| 140 km | Montenegro | Tara | 6%
|
| 230 km | Iceland | Þjórsá | 6%
|
| 430 km | New Zealand | Waikato | 6%
|
| 350 km | Eritrea | Anseba | 3%
|
| 190 km | Albania | Aoös | 3%
|
| 800 km | Ivory Coast | Bandama | 3%
|
| 150 km | Brunei | Belait | 3%
|
| 400 km | Liberia | Cavalla | 3%
|
| 230 km | Panama | Chucunaque | 3%
|
| 10 km | Antigua and Barbuda | Cooks Creek | 3%
|
| 310 km | Guinea-Bissau | Corubal | 3%
|
| 720 km | Suriname | Courantyne | 3%
|
| 250 km | Tunisia | Medjerda | 3%
|
| 480 km | Nepal | Ghaghara | 3%
|
| 30 km | Mauritius | Grand River South East | 3%
|
| 40 km | Vanuatu | Jordan | 3%
|
| 10 km | Singapore | Kallang | 3%
|
| 140 km | Lebanon | Litani | 3%
|
| 440 km | Chile | Loa | 3%
|
| 60 km | Solomon Islands | Lunggua | 3%
|
| 340 km | Sri Lanka | Mahaweli Ganga | 3%
|
| 270 km | Bhutan | Manas | 3%
|
| 560 km | Madagascar | Mangoky | 3%
|
| 700 km | Botswana | Molopo | 3%
|
| 490 km | Guatemala | Motagua | 3%
|
| 400 km | Ecuador | Napo | 3%
|
| 5 km | Palau | Ngrikill | 3%
|
| 350 km | Rwanda | Nyabarongo | 3%
|
| 510 km | Benin | Ouémé | 3%
|
| 10 km | F. S. Micronesia | Pilan Kiewp | 3%
|
| 10 km | Saint Vincent and the Grenadines | Rabacca | 3%
|
| 560 km | Malaysia | Rajang | 3%
|
| 230 km | Equatorial Guinea | Rio Benito | 3%
|
| 20 km | São Tomé and Príncipe | Rio Ió Grande | 3%
|
| 5 km | Seychelles | Rochon | 3%
|
| 390 km | Sierra Leone | Rokel | 3%
|
| 20 km | Saint Lucia | Roseau | 3%
|
| 760 km | Tanzania | Ruvuma | 3%
|
| 10 km | Samoa | Vaisigano | 3%
|
| 300 km | Dominican Republic | Yaque del Norte | 3%
|