| River 1 | River 2 | City | % Correct |
|---|---|---|---|
| Ottawa | St. Lawrence | Montréal | 82%
|
| Missouri | Mississippi | St. Louis | 79%
|
| Blue Nile | White Nile | Khartoum | 73%
|
| Allegheny | Ohio | Pittsburgh | 69%
|
| Negro | Amazon | Manaus | 63%
|
| Sava | Danube | Belgrade | 55%
|
| Saône | Rhône | Lyon | 53%
|
| Dong (East) | Zhujiang (Pearl) | Guangzhou | 47%
|
| Euphrates | Tigris | Basra | 40%
|
| Tonle Sap | Mekong | Phnom Penh | 32%
|
| Jialin | Yangtze | Chongqing | 29%
|
| Marañón | Amazon | Iquitos | 8%
|
| Oka | Volga | Nizhny Novgorod | 8%
|
| Charles | Todd | Alice Springs | 5%
|
| Ubangi | Congo | Mbandaka | 3%
|