| 100% | STOUR | 5 | River in Kent that flows into the English Channel at Pegwell Bay |
| 71% | DART | 4 | River in Devon that flows into the English Channel at Dartmouth |
| 55% | RANCE | 5 | River in NW France that flows into the English Channel between Dinard and Saint-Malo |
| 48% | MURRAY | 6 | River rising in New South Wales, Australia, that flows into the sea at Encounter Bay |
| 47% | SEINE | 5 | It flows into the English Channel at Le Havre |
| 46% | FAL | 3 | River in Cornwall that reaches the English Channel at Falmouth |
| 45% | ADUR | 4 | River in Sussex that reaches the English Channel at Shoreham-by-Sea |
| 44% | VOLGA | 5 | Longest river in Europe that flows into the Caspian Sea |
| 43% | UGIE | 4 | River in Scotland that flows to the North Sea at Peterhead |
| 43% | WESER | 5 | River in Germany that flows to the North Sea at Bremerhaven |
| 43% | TAFF | 4 | River that flows to the Bristol Channel at Cardiff |
| 43% | TEES | 4 | River that flows into the North Sea at Middlesbrough |
| 42% | ILLER | 5 | River that flows into the Danube in the center of Ulm |
| 42% | WYRE | 4 | River that flows into Morecambe Bay at Fleetwood |
| 40% | SAVA | 4 | River rising in Slovenia that flows to the Danube at Belgrade |
| 39% | TYNE | 4 | English river that flows to the North Sea at South Shields |
| 39% | OISE | 4 | 212 mi. river that flows into the Seine in the suburbs of Paris |
| 38% | EMS | 3 | River rising in NW Germany that flows into the North Sea near Emden |
| 38% | EXE | 3 | River into the English Channel |
| 38% | MOISIE | 6 | River in Quebec, Canada, that flows into the St Lawrence River near Sept-Iles |
| 37% | YSER | 4 | River rising in northern France that flows through Belgium into the North Sea at Nieuwpoort |
| 37% | AVE | 3 | 52 mile long Portuguese river that flows into the Atlantic at Vila do Conde |
| 37% | ORB | 3 | Beziers' 84 mile long river that flows into the Mediterranean at Valras-Plage |
| 37% | ELBE | 4 | River in central Europe that flows to the North Sea at Hamburg |
| 37% | TYNE | 4 | River in N England that flows to the North Sea at South Shields |
| 36% | EBRO | 4 | River in Spain that flows to the Mediterranean southwest of Tarragona |
| 36% | OSAGE | 5 | River that flows into the Lake of the Ozarks |
| 36% | OUSE | 4 | River in England that flows to the Wash near King's Lynn |
| 36% | OMO | 3 | River in Ethiopia that flows south into Lake Turkana, Kenya |
| 36% | MAIN | 4 | River in Germany that flows through Wurzburg to the Rhine |