| City | River | % Correct |
|---|---|---|
| Cairo | Nile | 99%
|
| London | Thames | 99%
|
| Paris | Seine | 97%
|
| Budapest | Danube | 96%
|
| New York City | Hudson | 96%
|
| Cologne | Rhine | 93%
|
| Baghdad | Tigris | 92%
|
| Turin | Po | 91%
|
| Shanghai | Yangtze | 91%
|
| Kinshasa | Congo | 88%
|
| New Orleans | Mississippi | 88%
|
| Volgograd | Volga | 88%
|
| Manaus | Amazon River | 83%
|
| Rome | Tiber | 80%
|
| Lyon | Rhone | 77%
|
| Washington DC | Potomac | 76%
|
| Montreal | St. Lawrence | 76%
|
| Phnom Penh | Mekong | 73%
|
| Nantes | Loire | 72%
|
| El Paso-Ciudad Juarez | Rio Grande | 71%
|
| Kiev | Dnieper | 68%
|
| Buenos Aires | Río de la Plata | 64%
|
| Rostov | Don | 61%
|
| Frankfurt | Main | 55%
|
| Hamburg | Elbe | 52%
|
| Hong Kong | Pearl | 52%
|
| Warsaw | Vistula | 52%
|
| Philadelphia | Delaware | 45%
|
| Lisbon | Tagus | 43%
|
| St Petersburg | Neva | 36%
|
| Berlin | Spree | 31%
|
| Seoul | Han | 28%
|
| Moscow | Moskva | 28%
|
| Bordeaux | Garonne | 27%
|
| Wroclaw | Oder | 25%
|
| Seville | Guadalquivir | 17%
|