| River | Country | % Correct |
|---|---|---|
| Congo | DR Congo | 95%
|
| Congo | Republic of Congo | 95%
|
| Niger | Niger | 88%
|
| Niger | Nigeria | 83%
|
| Indus | India | 75%
|
| Gambia | Gambia | 60%
|
| Uruguay | Uruguay | 60%
|
| Paraguay | Paraguay | 58%
|
| Senegal | Senegal | 55%
|
| Zambezi | Zambia | 55%
|
| Jordan | Jordan | 40%
|
| Bosna | Bosnia and Herzegovina | 13%
|