| River to the Humber | 19 |
| River to the Gulf of Mexico | 27 |
| River to the Gulf of Guinea | 27 |
| River to the Gulf of Finland | 28 |
| River to the Gulf of Cambay | 27 |
| River to the Garonne | 20 |
| River to the Fulda | 18 |
| River to the Firth of Clyde | 27 |
| River to the English Channel | 28 |
| River to the Elbe | 17 |
| River to the Dnieper | 20 |
| River to the Danube | 19 |
| River to the Congo | 18 |
| River to the Columbia | 21 |
| River to the Colorado | 21 |
| River to the Chesapeake Bay | 27 |
| River to the Channel | 20 |
| River to the Caspian Sea | 24 |
| River to the Caspian | 20 |
| River to the Black Sea | 22 |
| River to the Bering Sea | 23 |
| River to the Bay of Biscay | 26 |
| River to the Bay of Bengal | 26 |
| River to the Baltic Sea | 23 |
| River to the Baltic | 19 |
| River to the Azov | 17 |
| River to the Atlantic | 21 |
| River to the Arctic Ocean | 25 |
| River to the Arctic | 19 |
| River to the Arabian Sea | 24 |
| River to the Amazon | 19 |
| River to the Aegean | 19 |
| River to the Adriatic Sea | 25 |
| River to the Adriatic | 21 |
| River to the Aare | 17 |
| River to Tarragona | 18 |
| River to Solway Firth | 21 |
| River to Siegen, Germany | 24 |
| River to Severn | 15 |
| River to Seine | 14 |
| River to Rio Grande | 19 |
| River to Rhone | 14 |
| River to Rhine | 14 |
| River to Pamlico Sound | 22 |
| River to Oder | 13 |
| River to North Sea | 18 |
| River to Moselle | 16 |
| River to Moray Firth | 20 |
| River to Mediterranean | 22 |
| River to Medit. | 15 |
| River to Lyon | 13 |
| River to Liverpool Bay | 22 |
| River to Leeds | 14 |
| River to Lake Ontario | 21 |
| River to Lake Huron | 19 |
| River to Lake Chad | 18 |
| River to Korea Bay | 18 |
| River to Khartoum | 17 |
| River to Kassel, Germany | 24 |
| River to Isar | 13 |
| River to Irish Sea | 18 |
| River to Hecate Strait | 22 |
| River to Hades | 14 |
| River to Gulf of Guinea | 23 |
| River to Gulf of Finland | 24 |
| River to Gorki | 14 |
| River to English Channel | 24 |
| River to Elbe | 13 |
| River to Donegal Bay | 20 |
| River to Danube | 15 |
| River to Caspian | 16 |
| River to Cairo | 14 |
| River to Boston Harbor | 22 |
| River to Barnegat Bay | 21 |
| River to Baltic | 15 |
| River to Arctic | 15 |
| River to Amazon | 15 |
| River to Adriatic | 17 |
| River through Zaragoza | 22 |
| River through Yuma County | 25 |
| River through York, England | 27 |
| River through York | 18 |
| River through Yakutsk | 21 |
| River through Wroclaw | 21 |
| River through Wiltshire | 23 |
| River through Wheeling | 22 |
| River through what used to be Zaire | 35 |
| River through western Kazakhstan | 32 |
| River through West Yorkshire | 28 |
| River through West Flanders | 27 |
| River through Waterloo | 22 |
| River through Washington | 24 |
| River through Warsaw | 20 |
| River through Wales and England | 31 |
| River through Venezuela | 23 |
| River through two world capitals | 32 |
| River through Tours | 19 |
| River through Toledo, Ohio | 26 |
| River through Toledo | 20 |
| River through the Steppes of Asia | 33 |