| River west of the Nubian Desert | 31 |
| River where baby Moses was found | 32 |
| River where Moses was hidden as a baby | 38 |
| River where Rome was founded | 28 |
| River where Romulus and Remus were abandoned | 44 |
| River where the Oto once settled | 32 |
| River whose delta is Cape Tortosa | 33 |
| River whose headwaters are near Lake Baikal | 43 |
| River whose mouth is near Nieuwpoort | 36 |
| River whose name is Celtic for "river" | 48 |
| River whose name means "hateful" | 42 |
| River whose name means "river" | 40 |
| River whose source is Mount Saint Helena | 40 |
| River with a chateau-filled valley | 34 |
| River with a fragrant sound | 27 |
| River with a mouth in the Mediterranean | 39 |
| River with a sturgeon population | 32 |
| River with an alphabetical-sounding name | 40 |
| River with an ancient road leading to Stonehenge | 48 |
| River with Blue and White tributaries | 37 |
| River with famous falls | 23 |
| River with historic flooding in 1966 | 36 |
| River with its source in the Appalachians | 41 |
| River with the Reichenbach Falls | 32 |
| River wriggler | 14 |
| River zapper | 12 |
| River ___ | 9 |
| River ___ (old Atari game) | 26 |
| River's "My Own Private Idaho" co-star | 52 |
| River's "My Own Private Idaho" costar | 51 |
| River's beginning | 21 |
| River's bottom | 18 |
| River's bounds | 18 |
| River's curve | 17 |
| River's end | 15 |
| River's end, often | 22 |
| River's end, sometimes | 26 |
| River's little cousin | 25 |
| River's mouth | 17 |
| River's mouthpiece | 22 |
| River's path, possibly | 26 |
| River's principal channel | 29 |
| River's smaller relative | 28 |
| River's turn | 16 |
| River's upper tributaries | 29 |
| River, city or state | 20 |
| River, county, city or lake in N.Y. | 35 |
| River, dam or reservoir in S.C. | 31 |
| River, Falls and Fort | 21 |
| River, in Mexico | 16 |
| River, in Spain | 15 |
| River, in Thailand | 18 |
| River, politician or cloth | 26 |
| River, site of Victoria falls | 29 |
| River, to Ramone | 16 |
| River, to Raoul | 15 |
| River, to Ricardo | 17 |
| River, to Rivera | 16 |
| River, to Roberto | 17 |
| River, town or bay in N.J. | 26 |
| River, valley or wine | 21 |
| River-bank deposit | 18 |
| River-bank landing | 18 |
| River-delta material | 20 |
| River-flood barrier | 19 |
| River-flood preventer | 21 |
| River-mouth area | 16 |
| River-mouth deposit | 19 |
| River-mouth deposits | 20 |
| River-mouth feature | 19 |
| River-mouth formation | 21 |
| River-mouth formations | 22 |
| River-mouth regions | 19 |
| River-mouth triangle | 20 |
| River-pollution problem | 23 |
| River-project board: Abbr. | 26 |
| River-sea junctions | 19 |
| River-sea link | 14 |
| River-to-ocean connector | 24 |
| River: Comb. form | 17 |
| River: Sp. | 10 |
| Rivera | 6 |
| Rivera and Orozco, e.g. | 23 |
| Rivera and others | 17 |
| Rivera known for saves | 22 |
| Rivera of "Chicago" | 29 |
| Rivera of Broadway's "West Side Story" | 52 |
| Rivera of Mexico | 16 |
| Rivera of stage fame | 20 |
| Rivera of the original "Chicago" | 42 |
| Rivera on TV | 12 |
| Rivera product | 14 |
| Rivera role: 1957 | 17 |
| Rivera specialties | 18 |
| Rivera specialty | 16 |
| Rivera the painter | 18 |
| Rivera with two Tonys | 21 |
| Rivera work | 11 |
| Rivera works | 12 |
| Rivera's forte | 18 |