| 100% | UBANGI | 6 | River that flows through the city of Bangui |
| 69% | VLTAVA | 6 | River that flows through the heart of Prague |
| 61% | ALB | 3 | 32 mile Rhine tributary that flows through the Northern Black Forest and the city of Karlsruhe |
| 60% | YSER | 4 | River that flows through the ganzepoot |
| 60% | COLORADO | 8 | River that flows through the Grand Canyon |
| 60% | MOSKVA | 6 | River that flows through the Russian capital |
| 58% | ELBE | 4 | European river that flows through the Czech Republic |
| 56% | REUSS | 5 | River of Switzerland that flows through Lake Lucerne and the town of Bremgarten |
| 56% | CAM | 3 | River that flows through Cambridge to the River Ouse |
| 56% | TEES | 4 | River that flows through Middlesbrough to the North Sea |
| 56% | RHINE | 5 | River that flows through Germany and the Swiss Alps |
| 55% | CHERWELL | 8 | Tributary of the River Thames that flows through Oxford |
| 55% | OSAGE | 5 | River that flows into the Lake of the Ozarks |
| 53% | SAN | 3 | 285 mi Polish river that runs north through the city of Sanok |
| 52% | ILLER | 5 | River that flows into the Danube in the center of Ulm |
| 52% | SAL | 3 | 482 mi. long river that flows into the Don and rises near the city of Elista in Kalmykia, Russia |
| 52% | PECOS | 5 | River that flows from New Mexico through Texas to the Rio Grande |
| 52% | RIOGRANDE | 9 | River that flows from Colorado to the Gulf of Mexico: 2 wds. |
| 49% | NILE | 4 | One of the longest rivers in the world that flows through Egypt |
| 49% | SPEY | 4 | River in Scotland that flows through the Grampian Mountains to the Moray Firth |
| 48% | SOAR | 4 | River that flows through Leicester |
| 48% | NILE | 4 | River that flows through Egypt |
| 48% | TIGRIS | 6 | River that flows through Baghdad |
| 48% | SEINE | 5 | River that flows through Paris |
| 48% | MERSEY | 6 | River that flows through Liverpool |
| 48% | MOSKVA | 6 | River that flows through Moscow |
| 48% | ISAR | 4 | River that flows through Bavaria |
| 48% | RHINE | 5 | River that flows through Cologne |
| 48% | TIBER | 5 | River that flows through Rome |
| 48% | MAIN | 4 | River in Germany that flows through Wurzburg to the Rhine |