| River of Europe and Asia | 24 |
| River of eastern Wales | 22 |
| River of eastern Germany | 24 |
| River of eastern France | 23 |
| River of Czechoslovakia | 23 |
| River of Congo Republic | 23 |
| River of central Italy | 22 |
| River of central Germany | 24 |
| River of Central Europe | 23 |
| River of central England | 24 |
| River of central Alberta | 24 |
| River of central Africa | 23 |
| River of Canada and U.S. | 24 |
| River of Austria and Hungary | 28 |
| River of Armentières | 23 |
| River of Aragón | 22 |
| River of "The Bard" | 29 |
| River of central Europe | 24 |
| River nymphs, in Greek myth | 27 |
| River nymph of Greek myth | 25 |
| River near the Vatican | 22 |
| River near the Sorbonne | 23 |
| River near the Red Sea | 22 |
| River near the Pyramids | 23 |
| River near the Leaning Tower | 28 |
| River near the Great Pyramids | 29 |
| River near the Great Pyramid | 28 |
| River near the Bosporus | 23 |
| River near St.-Quentin | 22 |
| River near Siegen, Germany | 26 |
| River near Mount Ararat | 23 |
| River near Kassel, Germany | 26 |
| River near Hadrian's Wall | 29 |
| River near Duke University | 26 |
| River near Balmoral Castle | 26 |
| River near Albertville | 22 |
| River mouth's buildup | 25 |
| River mouth phenomenon | 22 |
| River mouth formations | 22 |
| River leading to the Rhine | 26 |
| River leading to the Caspian | 28 |
| River land in Scotland | 22 |
| River known for water gap | 25 |
| River known for its valley | 26 |
| River joining the Fulda | 23 |
| River islands, to Brits | 23 |
| River island, to Brits | 22 |
| River into the Yellow Sea | 25 |
| River into the Tatar Strait | 27 |
| River into the Skagerrak | 24 |
| River into the Ohio: abbr. | 26 |
| River into the North Sea | 24 |
| River into the Mediterranean | 28 |
| River into the Irish Sea | 24 |
| River into the Gulf of Venice | 29 |
| River into the Gulf of Tonkin | 29 |
| River into the Dordogne | 23 |
| River into the Caspian | 22 |
| River into the Bay of Biscay | 28 |
| River into the Arkansas | 23 |
| River into Solway Firth | 23 |
| River into Monterey Bay | 23 |
| River into Lake Ontario | 23 |
| River into Lake Geneva | 22 |
| River into Donegal Bay | 22 |
| River into Chesapeake Bay | 25 |
| River into Bristol Channel | 26 |
| River into Bay of the Seine | 27 |
| River into Bay of Biscay | 24 |
| River in WWI battle history | 27 |
| River in western Europe | 23 |
| River in western China | 22 |
| River in western Belgium | 24 |
| River in western Africa | 23 |
| River in Wales and England | 26 |
| River in W.W. I fighting | 24 |
| River in Turkish Armenia | 24 |
| River in the Pine Tree State | 28 |
| River in the Netherlands | 24 |
| River in the D-Day invasion | 27 |
| River in the City of Lilies | 27 |
| River in the Carolinas | 22 |
| River in the Bernese Alps | 25 |
| River in Tell's land | 24 |
| River in Spain and Portugal | 27 |
| River in southwestern France | 28 |
| River in southern Alberta | 25 |
| River in Poland, to Germans | 27 |
| River in northwest China | 24 |
| River in Northumberland | 23 |
| River in northern France | 24 |
| River in Northern California | 28 |
| River in northeast Africa | 25 |
| River in New York state | 23 |
| River in Kan. and Neb. | 22 |
| River in India and Pakistan | 27 |
| River in Hercule Poirot title | 29 |
| River in Georgia and Florida | 28 |
| River in France and Belgium | 27 |
| River in Czechoslovakia | 23 |