| 100% | URAL | 4 | It flows to the Caspian Sea |
| 80% | URAL | 4 | It flows to the Caspian |
| 77% | URAL | 4 | River that flows to the Caspian Sea |
| 74% | URAL | 4 | Russian river that flows to the Caspian Sea at Guryev |
| 64% | URAL | 4 | Russian river to the Caspian Sea |
| 64% | URAL | 4 | River leading to the Caspian Sea |
| 63% | EGER | 4 | It flows to the Elbe |
| 63% | POTOMACRIVER | 12 | It flows to the Chesapeake Bay |
| 62% | VOLGA | 5 | River to the Caspian Sea |
| 62% | URAL | 4 | River to the Caspian Sea |
| 62% | VOLGARIVER | 10 | Artery to the Caspian Sea |
| 61% | SEINE | 5 | It flows to the harbor of Le Havre |
| 61% | RHEIN | 5 | It flows into the North Sea |
| 61% | ARNO | 4 | It flows into the Tyrrhenian Sea |
| 60% | URAL | 4 | It flows into the Caspian |
| 56% | LAKE | 4 | What the Caspian Sea is (despite its name) |
| 55% | RHONE | 5 | It flows from the Alps to the Mediterranean |
| 54% | YANGTZE | 7 | River that flows to the East China Sea near Shanghai, China |
| 54% | RIVERPO | 7 | It flows from the Cottian Alps to the Adriatic |
| 53% | GANGESRIVER | 11 | It flows from the Himalayas to the Bay of Bengal |
| 53% | GANGES | 6 | It flows from the Himalayas to the Bay of Bengal |
| 52% | WEAR | 4 | River that flows to the North Sea at Sunderland |
| 52% | TEES | 4 | River that flows to the North Sea at Middlesbrough |
| 52% | RIBBLE | 6 | River that flows to the Irish Sea near Preston |
| 52% | EBB | 3 | Flow out to sea, like the tide |
| 51% | ARALSEA | 7 | The Amu Darya used to flow into it |
| 51% | IRAN | 4 | It borders the Caspian Sea, Persian Gulf, and Gulf of Oman |
| 50% | RIVER | 5 | It runs from the mountains to the sea |
| 49% | TYNE | 4 | English river that flows to the North Sea at South Shields |
| 48% | URAL | 4 | River feeding into the Caspian Sea |