There is a total of 11158 clues beginning with ri
- River on Polish-German border
- River on Soviet-Manchuria boundary
- River on Switzerland's border
- River on the Benin border
- River on the Brandenburg border
- River on The Broads
- River on the Canadian border
- River on the China/North Korea border
- River on the Chinese-Korean border
- River on the Korean border
- River on the North Korea/China border
- River on the Serbian border
- River on the Texas/Louisiana border
- River on which Breslau lies
- River on which Canton lies
- River on which Ciudad Bolivar is
- River on which Dixmude lies
- River on which Florence is situated
- River on which Frankfurt lies
- River on which is Prome
- River on which Krasnodar is
- River on which Murmansk is
- River on which Roosevelt Dam is
- River on which Rouen lies
- River on which Soissons lies
- River on which Yakutsk lies
- River on Zaire's boundary
- River or bay of New Jersey
- River or canal
- River or cartoonist
- River or city
- River or city in SD
- River or city of Maine
- River or dam in Germany
- River or dynasty
- River or dynasty name
- River or former English county
- River or goose
- River or Indian
- River or lake outing
- River or monster
- River or mountains
- River or province of Luzon
- River or range
- River or ravine: North Africa
- River or region in Europe
- River or reservoir in Hesse
- River or sea
- River or South
- River or state
- River or town in Ecuador
- River or town in Wash
- River or wine
- River origin
- River originating in Cantabria
- River originating in Manchuria
- River originating in Pittsburgh
- River originating in the Alps
- River originating in the Savoy Alps
- River originating near Winterberg
- River Ouse city
- River out of Pittsburgh
- River outlet
- River outlets
- River packets
- River painted by Cézanne
- River painted by Rembrandt
- River painted by van Gogh
- River pair
- River paralleled by I-80 through a long stretch of the Plains
- River part
- River part
- River parts
- River passing Leopoldville
- River passing Munich
- River past Amiens
- River past Armentières
- River past Balmoral Castle
- River past Bern
- River past Berne
- River past Buckingham
- River past Caen
- River past Cairo
- River past Ciudad Bolívar
- River past Dortmund
- River past Dresden
- River past Duisburg
- River past Fontainebleau
- River past Fremont, Nebraska
- River past Geneva
- River past Grenoble
- River past Interlaken
- River past Iola, Kansas
- River past Liechtenstein
- River past Logroño
- River past Louisville
- River past Luxor
- River past Memphis
- River past Notre Dame
- River past Orenburg