| Country | River | % Correct |
|---|---|---|
| United States | Missouri | Mississippi | Yukon | Rio Grande | Colorado | Arkansas | Columbia | Red | Snake | Ohio | 98%
|
| China | Yangtze | Yellow | Ob | Irtysh | Amur | Argun | Mekong | Indus | Salween | Tsangpo | Brahmaputra | Pearl | Zhujiang | 96%
|
| Brazil | Amazon | Tocantins | Araguaia | Parana | Sul | Ocidental | Oriental | Parnaiba | Sao Francisco | Leste | Sudeste | Madeira | Jurua | Parana | 94%
|
| Germany | Danube | Rhine | Elbe | Main | Oder | Moselle | Inn | Weser | Saale | Spree | 94%
|
| France | Rhine | Loire | Meuse | Rhone | Seine | Garonne | Moselle | Marne | Dordogne | Lot | 93%
|
| United Kingdom | Severn | Thames | Trent | Great Ouse | Wye | Spey | Clyde | Tweed | Nene | Tay | 93%
|
| India | Indus | Brahmaputra | Ganges | Godavari | Krishna | Yamuna | Narmada | Mahanadi | Cauvery | Tapi | 92%
|
| Russia | Yenisei | Angara | Selenge | Ob | Irtysh | Amur | Argun | Lena | Volga | Nizhnyaya Tunguska | Vilyuy | Kolyma | Ishim | Ural | 87%
|
| Mexico | Rio Grande | Colorado | Usumacinta | Culiacán | Balsas | Lerma | Grijalva | Nazas | Río Conchos | Pánuco | 78%
|
| Vietnam | Mekong | Red | Black | Dong Nai | Ca | Song Ma | Kong | Srepok | Chu | Gianh | 76%
|
| Canada | Mackenzie | Yukon | Saint Lawrence | Nelson | Slave | Columbia | Saskatchewan | Peace | Churchill | South Saskatchewan | 73%
|
| Australia | Murray | Murrumbidgee | Darling | Lachlan | Warrego | Cooper | Paroo | Flinders | Diamantina | Gascoyne | 56%
|