| 100% | TEES | 4 | River that flows through Middlesbrough to the North Sea |
| 72% | TEES | 4 | River that flows to the North Sea at Middlesbrough |
| 66% | TEES | 4 | River that flows into the North Sea at Middlesbrough |
| 63% | WEAR | 4 | River that flows to the North Sea at Sunderland |
| 61% | CAM | 3 | River that flows through Cambridge to the River Ouse |
| 60% | YSER | 4 | River rising in northern France that flows through Belgium into the North Sea at Nieuwpoort |
| 60% | UGIE | 4 | River in Scotland that flows to the North Sea at Peterhead |
| 60% | TYNE | 4 | English river that flows to the North Sea at South Shields |
| 60% | WESER | 5 | River in Germany that flows to the North Sea at Bremerhaven |
| 59% | ELBE | 4 | River in central Europe that flows to the North Sea at Hamburg |
| 58% | TYNE | 4 | River in N England that flows to the North Sea at South Shields |
| 58% | URAL | 4 | River that flows to the Caspian Sea |
| 57% | ELBE | 4 | 380 mile central European river that flows to the North Sea |
| 57% | RIBBLE | 6 | River that flows to the Irish Sea near Preston |
| 56% | YANGTZE | 7 | River that flows to the East China Sea near Shanghai, China |
| 55% | ORD | 3 | River in Western Australia that flows north to Cambridge Gulf and the Timor Sea |
| 55% | PECOS | 5 | River that flows from New Mexico through Texas to the Rio Grande |
| 55% | MAIN | 4 | River in Germany that flows through Wurzburg to the Rhine |
| 55% | URAL | 4 | Russian river that flows to the Caspian Sea at Guryev |
| 55% | ORD | 3 | River in Western Australia that flows north to the Timor Sea |
| 54% | DRIN | 4 | River rising in Macedonia that flows through Albania to the Adriatic |
| 54% | SIRET | 5 | River rising in Ukraine that flows through Romania to the Danube |
| 53% | DON | 3 | River that rises in the Cairngorm Mountains before flowing east to the North Sea |
| 53% | DEE | 3 | River in North Wales and Cheshire that flows to the Irish Sea |
| 53% | ELBE | 4 | German river that leads to the North Sea |
| 52% | YSER | 4 | River that flows through the ganzepoot |
| 51% | COLORADO | 8 | River that flows through the Grand Canyon |
| 51% | MOSKVA | 6 | River that flows through the Russian capital |
| 51% | VLTAVA | 6 | River that flows through the heart of Prague |
| 51% | UBANGI | 6 | River that flows through the city of Bangui |