| River into the Baltic | 21 |
| River into the Bay of Biscay | 28 |
| River into the Bay of the Seine | 31 |
| River into the Caspian | 22 |
| River into the Danube | 21 |
| River into the Dordogne | 23 |
| River into the Elbe | 19 |
| River into the English Channel | 30 |
| River into the Fulda | 20 |
| River into the Gulf of Tonkin | 29 |
| River into the Gulf of Venice | 29 |
| River into the Irish Sea | 24 |
| River into the Mediterranean | 28 |
| River into the Mosel | 20 |
| River into the North Sea | 24 |
| River into the Ohio | 19 |
| River into the Ohio: abbr. | 26 |
| River into the Ouse | 19 |
| River into the Rhone | 20 |
| River into the Seine | 20 |
| River into the Severn | 21 |
| River into the Skagerrak | 24 |
| River into the Tatar Strait | 27 |
| River into the Tiber | 20 |
| River into the Weser | 20 |
| River into the Yellow Sea | 25 |
| River into Utah Lake | 20 |
| 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 island | 12 |
| River island, to Brits | 22 |
| River island: Var. | 18 |
| River islands | 13 |
| River islands, to Brits | 23 |
| River isle | 10 |
| River isles | 11 |
| River islet | 11 |
| River islets | 12 |
| River joining the Fulda | 23 |
| River joining the Missouri near Jefferson City | 46 |
| River Jolson loved | 18 |
| River Jordan's destination | 30 |
| River just south of the Central African Republic | 48 |
| River known anciently as Obringa | 32 |
| River known for disastrous floods | 33 |
| River known for its valley | 26 |
| River known for the goldfields in its basin | 43 |
| River known for water gap | 25 |
| River known in ancient times as Obringa | 39 |
| River known to the ancients as Obringa | 38 |
| River Kwai locale | 17 |
| River land in Scotland | 22 |
| River landing place | 19 |
| River leading to the Caspian | 28 |
| River leading to the Caspian Sea | 32 |
| River leading to the Rhine | 26 |
| River leaper | 12 |
| River lurker | 12 |
| River mammal | 12 |
| River measure | 13 |
| River mentioned in the Rig Veda | 31 |
| River mouth | 11 |
| River mouth area | 16 |
| River mouth areas | 17 |
| River mouth deposits | 20 |
| River mouth feature | 19 |
| River mouth features | 20 |
| River mouth formation | 21 |
| River mouth formations | 22 |
| River mouth phenomenon | 22 |
| River mouth's buildup | 25 |
| River mouth: Abbr. | 18 |
| River mouths | 12 |
| River movement | 14 |
| River name meaning "where the goods are brought in" | 61 |
| River named for an Indian tribe | 31 |
| River near Albertville | 22 |
| River near Anne Hathaway's cottage | 38 |
| River near Balmoral Castle | 26 |
| River near Bologna | 18 |
| River near Chantilly | 20 |
| River near Duke University | 26 |
| River near Dunkerque | 20 |
| River near Eboli | 16 |
| River near Emden | 16 |
| River near Fairbanks | 20 |
| River near Gerona | 17 |
| River near Hadrian's Wall | 29 |
| River near Karachi | 18 |
| River near Kassel | 17 |
| River near Kassel, Germany | 26 |
| River near Khartoum | 19 |
| River near Lethe | 16 |
| River near lots of lovely castles, to the Germans | 49 |
| River near Martigny | 19 |
| River near Milan | 16 |