| 100% | ELS | 3 | 24 mile long river and tributary of the Streu in the Rhon Mountains, Bavaria |
| 40% | PLATTE | 6 | — River, tributary of the Missouri in Nebraska, US, upon which Lexington and Fremont stand |
| 39% | IRTYSH | 6 | River rising in the Altai Mountains; chief tributary of the River Ob |
| 39% | META | 4 | 500 mile Colombian river and major tributary of the Orinoco |
| 39% | WHARFE | 6 | Tributary of the River Ouse in West and North Yorkshire upon which Ilkley stands |
| 38% | IRTYSH | 6 | Asian river rising in the Altai Mountains; chief tributary of the River Ob |
| 37% | TAO | 3 | 62 mile Yellow River tributary that starts in the Xiqing Mountains |
| 37% | GRANTA | 6 | Local name for the longer of two main tributaries of the River Cam in eastern England |
| 36% | ABRA | 4 | 111 mile long river in the Philippines originating near Mount Data and flowing into the South China Sea |
| 36% | SAL | 3 | 482 mi. long river that flows into the Don and rises near the city of Elista in Kalmykia, Russia |
| 35% | PLATTE | 6 | — River, tributary of the Missouri in Nebraska, US, upon which Fremont stands |
| 35% | TOA | 3 | 81 mile long Cuban river, located mostly in Guantanamo Province, that enters the Caribbean just north of Baracoa |
| 34% | RUHR | 4 | River in Germany, a tributary of the Rhine |
| 34% | PASHA | 5 | Tributary of the Svir River in NW Russia |
| 34% | LACHLAN | 7 | River in SE Australia; main tributary of the Murrumbidgee |
| 34% | ALSTER | 6 | Tributary of the Elbe and two lakes in Hamburg |
| 34% | AAR | 3 | 183 mile long Swiss river that rises in the Bernese Alps and has more than 40 hydroelectric plants along its length |
| 34% | MARNE | 5 | River in France which is a tributary of the Seine |
| 34% | IRTYSH | 6 | Main tributary of the Ob River in Russia |
| 33% | ORE | 3 | The longest train ever consisted of 682 cars, was 4.5 miles long and carried this product in W. Australia on June 21, 2001 |
| 33% | KAMA | 4 | Tributary of the Volga River upon which Perm and Solikamsk stand |
| 33% | WHOTHEHELLKNOWS | 15 | Left tributary of the Vitim River in Irkutsk Oblast, Russia |
| 33% | VYATKA | 6 | River in Russia, a tributary of the Kama River upon which Kotelnich stands |
| 32% | SEVERN | 6 | The two longest rivers in the UK: Thames and __ |
| 32% | ANDUIN | 6 | Longest river of the Third Age in Middle-earth |
| 32% | SOR | 3 | 30 mile long river that's the only salmon river in Galicia |
| 32% | OZARKS | 6 | Location of the Boston Mountains and Buffalo River |
| 32% | BUG | 3 | Tributary of the Narew River forming part of Poland's border with Belarus and Ukraine |
| 32% | ORANGE | 6 | River rising in the Drakensberg mountains that forms the boundary between South Africa and Namibia |
| 32% | BRENT | 5 | Major tributary of the River Thames rising in the London Borough of Barnet |