| 100% | CLYDE | 5 | River in Scotland that flows through Glasgow |
| 78% | SPEY | 4 | River in Scotland that flows through the Grampian Mountains to the Moray Firth |
| 65% | UGIE | 4 | River in Scotland that flows to the North Sea at Peterhead |
| 65% | YEO | 3 | River in England that flows through Congresbury |
| 63% | MAIN | 4 | River in Germany that flows through Wurzburg to the Rhine |
| 58% | CAM | 3 | River that flows through and is hidden in "Cambridge" |
| 57% | DRIN | 4 | River rising in Macedonia that flows through Albania to the Adriatic |
| 57% | SIRET | 5 | River rising in Ukraine that flows through Romania to the Danube |
| 55% | SENEGAL | 7 | River in West Africa that shares its name with a country it flows through |
| 52% | VIRE | 4 | River in Normandy, France, that flows through Saint-Lo |
| 50% | CLYDE | 5 | River flowing through Glasgow |
| 49% | SOAR | 4 | River that flows through Leicester |
| 49% | NILE | 4 | River that flows through Egypt |
| 49% | TIGRIS | 6 | River that flows through Baghdad |
| 49% | SEINE | 5 | River that flows through Paris |
| 49% | MERSEY | 6 | River that flows through Liverpool |
| 49% | MOSKVA | 6 | River that flows through Moscow |
| 49% | ISAR | 4 | River that flows through Bavaria |
| 49% | RHINE | 5 | River that flows through Cologne |
| 49% | TIBER | 5 | River that flows through Rome |
| 49% | OMO | 3 | River in Ethiopia that flows south into Lake Turkana, Kenya |
| 49% | LANDWEHR | 8 | Canal that flows through Berlin, built in 1840s |
| 49% | ARNO | 4 | River that flows through Florence, Italy |
| 49% | LIFFEY | 6 | River that flows through Dublin, Ireland |
| 49% | VLTAVA | 6 | River that flows through central Prague |
| 49% | YSER | 4 | River that flows through the ganzepoot |
| 49% | YSER | 4 | River rising in northern France that flows through Belgium into the North Sea at Nieuwpoort |
| 48% | EBRO | 4 | River in Spain that flows to the Mediterranean southwest of Tarragona |
| 48% | DART | 4 | River in Devon that flows into the English Channel at Dartmouth |
| 48% | WESER | 5 | River in Germany that flows to the North Sea at Bremerhaven |