| 100% | WHARFE | 6 | Tributary of the River Ouse in West and North Yorkshire upon which Ilkley stands |
| 50% | PLATTE | 6 | — River, tributary of the Missouri in Nebraska, US, upon which Lexington and Fremont stand |
| 48% | KAMA | 4 | Tributary of the Volga River upon which Perm and Solikamsk stand |
| 44% | DERWENT | 7 | Tributary of the River Trent upon which Derby stands |
| 44% | VYATKA | 6 | River in Russia, a tributary of the Kama River upon which Kotelnich stands |
| 42% | PLATTE | 6 | — River, tributary of the Missouri in Nebraska, US, upon which Fremont stands |
| 40% | ILKLEY | 6 | Town in West Yorkshire on the River Wharfe north-west of Leeds |
| 38% | VITIM | 5 | Russian river, a tributary of the Lena, upon which Bodaybo, Irkutsk, stands |
| 38% | KAMA | 4 | Russian river upon which the cities of Perm and Solikamsk stand |
| 37% | KUBAN | 5 | Russian river upon which the cities of Armavir and Temryuk, Krasnodar Krai, stand |
| 35% | TORRIDGE | 8 | River in North Devon upon which Bideford stands |
| 35% | NIDD | 4 | River upon which Knaresborough, North Yorkshire, stands |
| 34% | MALHAM | 6 | Village in North Yorkshire north-west of Ilkley noted for — Tarn and — Cove |
| 34% | ILKLEY | 6 | Town in West Yorkshire on the River Wharfe northwest of Leeds |
| 34% | WABASH | 6 | River of the US upon which Terre Haute, Indiana, stands |
| 34% | RHONE | 5 | River rising in the Swiss Alps upon which Avignon, France, stands |
| 33% | WURM | 4 | River in Germany upon which Aachen and Geilenkirchen stand |
| 33% | SWALE | 5 | River in North Yorkshire that joins the Ure to form the Ouse |
| 32% | GOOLE | 5 | Inland port in the East Riding of Yorkshire at the confluence of the Rivers Ouse and Don |
| 32% | URE | 3 | River of North Yorkshire that flows to the Swale to form the Ouse |
| 32% | CREE | 4 | River in Scotland upon which Newton Stewart, Dumfries and Galloway, stands |
| 32% | CREE | 4 | River in Scotland upon which Newton Stewart, Dumfries and Galloway stands |
| 32% | EDER | 4 | River in central Germany upon which Felsberg and Fritzlar stand |
| 32% | LOSSIE | 6 | River in NE Scotland upon which Kellas and Dallas stand |
| 32% | MARNE | 5 | River in France which is a tributary of the Seine |
| 32% | PASHA | 5 | Tributary of the Svir River in NW Russia |
| 31% | ALSTER | 6 | Tributary of the Elbe and two lakes in Hamburg |
| 31% | IRTYSH | 6 | Main tributary of the Ob River in Russia |
| 31% | BRENT | 5 | Major tributary of the River Thames rising in the London Borough of Barnet |
| 30% | ELS | 3 | 24 mile long river and tributary of the Streu in the Rhon Mountains, Bavaria |