| Rivals for the folks' attention, maybe | 42 |
| Rive Gauche and Rive Droite separator | 37 |
| River across Manhattan from the Hudson | 38 |
| River across the French/German border | 37 |
| River along the China/Korea border | 34 |
| River along the Quai d'Orsay | 32 |
| River along the Zambia-Zimbabwe border | 38 |
| River alongside King's College | 34 |
| River alongside the Royal Shakespeare Theatre | 45 |
| River areas named for their shape | 33 |
| River around the Île de la Cité | 37 |
| River beneath the 6th October Bridge | 36 |
| River beneath the Brooklyn Bridge | 33 |
| River beside the Royal Shakespeare Theatre | 42 |
| River between Argentina and Uruguay | 35 |
| River between China and North Korea | 35 |
| River between Devon and Cornwall | 32 |
| River between Germany and Poland | 32 |
| River between Lake Erie and Lake Ontario | 40 |
| River between Manchuria and the U.S.S.R. | 40 |
| River between Manchuria and U.S.S.R. | 36 |
| River between Ontario and Quebec | 32 |
| River between Poland and E. Germany | 35 |
| River between Spain and Portugal | 32 |
| River between Texas and Louisiana | 33 |
| River between two Midwestern states | 35 |
| River bridged by the Ponte Vecchio | 34 |
| River by the Royal Shakespeare Theatre | 38 |
| River called "Big Muddy" | 34 |
| River called Hiddekil in the Bible | 34 |
| River called Liger by the ancients | 34 |
| River connected by canal to the Don | 35 |
| River connected by canal to the Tiber | 37 |
| River connected by canal to the Volga | 37 |
| River connected to a 165-mile long European canal | 49 |
| River crossed by a ferry in a 1965 top 10 hit | 45 |
| River crossed by Allied forces in February 1945 | 47 |
| River crossed by the Longfellow Bridge | 38 |
| River crossed by the North Beacon Bridge | 40 |
| River crossed by the Pont d'Avignon | 39 |
| River crossed by the Ponte Vecchio | 34 |
| River crossing France's Nord department | 43 |
| River deliberately flooded in W.W. I | 36 |
| River dividing Germany and Poland | 33 |
| River explored by David Livingstone | 35 |
| River explored by V. L. Cameron et al. | 38 |
| River famously crossed by Caesar | 32 |
| River featured in Guinness flick | 32 |
| River flowing alongside Notre Dame | 34 |
| River flowing beneath Paris's Pont Neuf | 43 |
| River flowing between two Great Lakes | 37 |
| River flowing from France into Germany | 38 |
| River flowing into and out of Lake Geneva | 41 |
| River flowing through Kazakhstan | 32 |
| River followed by the Oregon Trail | 34 |
| River followed by the Pony Express | 34 |
| River formed by the Congaree and Wateree | 40 |
| River forming part of the European-Asian border | 47 |
| River forming the borders of parts of five states | 49 |
| River forming the Handegg waterfall | 35 |
| River found in "sewer" | 32 |
| River from Lake Erie to Lake Ontario | 36 |
| River from Pittsburgh to the Mississippi | 40 |
| River from Silesia to the Neisse | 32 |
| River from the Alps to the North Sea | 36 |
| River from the Cairngorm Mountains | 34 |
| River from the Cantabrian Mountains | 35 |
| River in British Columbia, or singer Anne | 42 |
| River in "The City of Lilies" | 39 |
| River in "The Divine Comedy" | 38 |
| River in a 1957 Best Picture title | 34 |
| River in an 1851 Leutze painting | 32 |
| River in an Agatha Christie title | 33 |
| River in Belarus crossed by Napoleon in 1812 | 44 |
| River in Dante's "Inferno" | 40 |
| River in England and city in France | 35 |
| River in Germany's Hesse region | 35 |
| River in Indiana's state song | 33 |
| River in New York and Pennsylvania | 34 |
| River in the title of a 1957 Alec Guinness film | 47 |
| River in view in "Room With a View" | 45 |
| River in which Achilles was dipped | 34 |
| River in which Rasputin was thrown | 34 |
| River including Livingstone Falls | 33 |
| River intentionally flooded in W.W. I | 37 |
| River into which Rasputin was thrown | 36 |
| River into which the Big Sandy flows | 36 |
| River into which the Fulda flows | 32 |
| River into which the Great Miami flows | 38 |
| River into which the Kentucky flows | 35 |
| River into which the Vltava flows | 33 |
| River joining the Missouri near Jefferson City | 46 |
| River just south of the Central African Republic | 48 |
| River known anciently as Obringa | 32 |
| River known for disastrous floods | 33 |
| River known for the goldfields in its basin | 43 |
| River known in ancient times as Obringa | 39 |
| River known to the ancients as Obringa | 38 |
| River leading to the Caspian Sea | 32 |
| River near Anne Hathaway's cottage | 38 |