| 100% | BALTIC | 6 | Sea that the Neva River empties into |
| 66% | ODER | 4 | River that empties into the Baltic Sea |
| 65% | ATLANTIC | 8 | Ocean that the Orange River empties into |
| 65% | CASPIAN | 7 | Sea that the River Volga flows into |
| 63% | DNIEPER | 7 | Russian river that empties into the Black Sea |
| 58% | BLACKSEA | 8 | Body of water that the Danube river empties into |
| 56% | ODER | 4 | River that drains into the Baltic Sea |
| 55% | TEES | 4 | River that flows into the North Sea at Middlesbrough |
| 55% | PECOS | 5 | River that empties into the Rio Grande |
| 54% | DANUBE | 6 | Major European river that flows into the Black Sea |
| 53% | VOLGA | 5 | Longest river in Europe that flows into the Caspian Sea |
| 53% | EMS | 3 | River rising in NW Germany that flows into the North Sea near Emden |
| 51% | YSER | 4 | River rising in northern France that flows through Belgium into the North Sea at Nieuwpoort |
| 51% | MURRAY | 6 | River rising in New South Wales, Australia, that flows into the sea at Encounter Bay |
| 49% | LADOGA | 6 | Lake —, body of water in Russia that drains through the River Neva into the Gulf of Finland |
| 46% | YSER | 4 | River into the North Sea |
| 46% | TEES | 4 | River into the North Sea |
| 46% | URAL | 4 | River feeding into the Caspian Sea |
| 45% | URAL | 4 | River that flows to the Caspian Sea |
| 44% | OLETA | 5 | River that drains the Everglades into Biscayne Bay |
| 44% | STYX | 4 | River that the infant Achilles was dipped into |
| 44% | ERIE | 4 | Great Lake that the Detroit River flows into |
| 44% | OSAGE | 5 | River that flows into the Lake of the Ozarks |
| 44% | WEAR | 4 | River that flows to the North Sea at Sunderland |
| 44% | TEES | 4 | River that flows through Middlesbrough to the North Sea |
| 44% | TEES | 4 | River that flows to the North Sea at Middlesbrough |
| 44% | LIMPOPO | 7 | River that meets the sea at Xai-Xai, Mozambique |
| 44% | RIBBLE | 6 | River that flows to the Irish Sea near Preston |
| 44% | ATLANTIS | 8 | Mythical island that sank into the sea |
| 44% | CHERWELL | 8 | Oxfordshire river that flows into the Thames |