| River in NW Europe | 18 |
| River in NW France | 18 |
| River in NW Iran | 16 |
| River in NW Spain | 17 |
| River in Pakistan | 17 |
| River in Peru | 13 |
| River in Pisa | 13 |
| River in Poland | 15 |
| River in Poland, to Germans | 27 |
| River in Portugal | 17 |
| River in puzzles | 16 |
| River in Quebec | 15 |
| River in Russia | 15 |
| River in Russia and Kazakhstan | 30 |
| River in S France | 17 |
| River in S.C. | 13 |
| River in Scotland | 17 |
| River in SE China | 17 |
| River in SE Eire | 16 |
| River in SE France | 18 |
| River in SE Kenya | 17 |
| River in SE Wales | 17 |
| River in Siberia | 16 |
| River in South Africa | 21 |
| River in southern Alberta | 25 |
| River in southwestern France | 28 |
| River in Spain | 14 |
| River in Spain and Portugal | 27 |
| River in Spain? | 15 |
| River in Sudan | 14 |
| River in Sussex | 15 |
| River in SW Asia | 16 |
| River in SW England | 19 |
| River in Sweden | 15 |
| River in Switzerland | 20 |
| River in Tasmania | 17 |
| River in Tell's land | 24 |
| River in Thailand | 17 |
| River in the Bernese Alps | 25 |
| River in the Carolinas | 22 |
| River in the City of Lilies | 27 |
| River in the D-Day invasion | 27 |
| River in the Netherlands | 24 |
| River in the Pine Tree State | 28 |
| River in the Russian Federation | 31 |
| River in the sea | 16 |
| River in the title of a 1957 Alec Guinness film | 47 |
| River in the U.S.S.R. | 21 |
| River in the Urals | 18 |
| River in the Yukon | 18 |
| River in Turkey | 15 |
| River in Turkish Armenia | 24 |
| River in Tuscany | 16 |
| River in U.S.S.R. | 17 |
| River in Ulster | 15 |
| River in Umbria | 15 |
| River in Va. | 12 |
| River in Venezuela | 18 |
| River in view in "Room With a View" | 45 |
| River in W Africa | 17 |
| River in W Canada | 17 |
| River in W Europe | 17 |
| River in W Turkey | 17 |
| River in W. Germany | 19 |
| River in W.W. I fighting | 24 |
| River in Wales | 14 |
| River in Wales and England | 26 |
| River in Warwickshire | 21 |
| River in West Germany | 21 |
| River in western Africa | 23 |
| River in western Belgium | 24 |
| River in western China | 22 |
| River in western Europe | 23 |
| River in which Achilles was dipped | 34 |
| River in which Rasputin was thrown | 34 |
| River in WWI battle history | 27 |
| River in Xanadu | 15 |
| River in Yorkshire | 18 |
| River in Yugoslavia | 19 |
| River in Zaire | 14 |
| River including Livingstone Falls | 33 |
| River inlet | 11 |
| River inlets | 12 |
| River intentionally flooded in W.W. I | 37 |
| River into Bay of Biscay | 24 |
| River into Bay of the Seine | 27 |
| River into Bristol Channel | 26 |
| River into Chesapeake Bay | 25 |
| River into Donegal Bay | 22 |
| River into Issyk-Kul | 20 |
| River into Korea Bay | 20 |
| River into Lake Chad | 20 |
| River into Lake Geneva | 22 |
| River into Lake Ilmen | 21 |
| River into Lake Ontario | 23 |
| River into Lyon | 15 |
| River into Monterey Bay | 23 |
| River into Ostia | 16 |
| River into Solway Firth | 23 |
| River into the Arkansas | 23 |