| River project evaluation? | 25 |
| River project | 13 |
| River probably discovered by Columbus in 1498 | 45 |
| River predator, briefly | 23 |
| River port NNW of Brisbane | 26 |
| River port east of Le Havre | 27 |
| River port | 10 |
| River pollution problem | 23 |
| River pollutant | 15 |
| River player | 12 |
| River plains named for their usual shape | 40 |
| River phenomenon | 16 |
| River phenomena (or what literally happens six times in this puzzle) | 68 |
| River People of the Southwest | 29 |
| River past Westminster Palace | 29 |
| River past Thebes | 17 |
| River past the ruins of Nineveh | 31 |
| River past St.-Germain | 22 |
| River past Solothurn | 20 |
| River past Orsk | 15 |
| River past Orenburg | 19 |
| River past Notre Dame | 21 |
| River past Memphis | 18 |
| River past Luxor | 16 |
| River past Logroño | 21 |
| River past Liechtenstein | 24 |
| River past Iola, Kansas | 23 |
| River past Interlaken | 21 |
| River past Grenoble | 19 |
| River past Geneva | 17 |
| River past Fremont, Nebraska | 28 |
| River past Fontainebleau | 24 |
| River past Duisburg | 19 |
| River past Dresden | 18 |
| River past Dortmund | 19 |
| River past Ciudad BolÃvar | 28 |
| River past Caen | 15 |
| River past Buckingham | 21 |
| River past Berne | 16 |
| River past Bern | 15 |
| River past Armentières | 25 |
| River past Amiens | 17 |
| River parts | 11 |
| River part | 10 |
| River pair | 10 |
| River painted by Cézanne | 27 |
| River outlet | 12 |
| River out of Pittsburgh | 23 |
| River Ouse city | 15 |
| River originating near Winterberg | 33 |
| River originating in the Savoy Alps | 35 |
| River originating in the Alps | 29 |
| River originating in Cantabria | 30 |
| River or wine | 13 |
| River or town in Wash. | 22 |
| River or town in Ecuador | 24 |
| River or state | 14 |
| River or South | 14 |
| River or sea | 12 |
| River or reservoir in Hesse | 27 |
| River or region in Europe | 25 |
| River or range | 14 |
| River or province of Luzon | 26 |
| River or province in Chile | 26 |
| River or mountains | 18 |
| River or monster | 16 |
| River or lake in Tex. and La. | 29 |
| River or Indian | 15 |
| River or goose | 14 |
| River or Gershwin's first big hit | 37 |
| River or former English county | 30 |
| River or earldom | 16 |
| River or dynasty | 16 |
| River or dam in Germany | 23 |
| River or city of Maine | 22 |
| River or city in S.D. | 21 |
| River or city | 13 |
| River or cartoonist | 19 |
| River or canal | 14 |
| River once called Obringa | 25 |
| River on Zaire's boundary | 29 |
| River on the Texas/Louisiana border | 35 |
| River on the North Korea/China border | 37 |
| River on the Korean border | 26 |
| River on the China/North Korea border | 37 |
| River on the Canadian border | 28 |
| River on The Broads | 19 |
| River on the Brandenburg border | 31 |
| River on the Benin border | 25 |
| River on Switzerland's border | 33 |
| River on Paraguay's border | 30 |
| River on North Korea's border | 33 |
| River on French-Belgian boundary | 32 |
| River of Zaire | 14 |
| River of Yuma and Phoenix | 25 |
| River of Yugoslavia | 19 |
| River of Yorkshire | 18 |
| River of York | 13 |
| River of Yakutsk | 16 |
| River of Xanadu | 15 |