| 100% | OSAGE | 5 | — River, tributary of the Missouri River in the US that flows into the Lake of the Ozarks reservoir |
| 76% | OSAGE | 5 | — River, tributary of the Missouri River, US, which flows into the Lake of the Ozarks reservoir |
| 75% | OSAGE | 5 | — River, tributary of the Missouri, US that flows into the Lake of the Ozarks reservoir |
| 75% | OSAGE | 5 | — River, tributary of the Missouri, US, that flows into the Lake of the Ozarks reservoir |
| 74% | OSAGE | 5 | — River, US tributary of the Missouri that flows into the Lake of the Ozarks reservoir |
| 58% | OSAGE | 5 | River that flows into the Lake of the Ozarks |
| 47% | ILLER | 5 | River that flows into the Danube in the center of Ulm |
| 47% | OSAGE | 5 | 276-mile-long Missouri river that the Harry S. Truman Reservoir and the Lake of the Ozarks sits on |
| 46% | PLATTE | 6 | — River, tributary of the Missouri in Nebraska, US, upon which Fremont stands |
| 46% | PLATTE | 6 | — River, tributary of the Missouri in Nebraska, US, upon which Lexington and Fremont stand |
| 46% | OISE | 4 | 212 mi. river that flows into the Seine in the suburbs of Paris |
| 44% | ILMEN | 5 | Lake —, body of water in northwest Russia that drains into Lake Ladoga through the Volkhov River |
| 43% | NILE | 4 | One of the longest rivers in the world that flows through Egypt |
| 42% | ILMEN | 5 | Lake —, body of water in NW Russia that drains through the Volkhov River into Lake Ladoga |
| 42% | ILMEN | 5 | Lake —, body of water in northwest Russia that drains through the Volkhov River into Lake Ladoga |
| 42% | VICTORIA | 8 | Lake —, body of water in Africa into which the Kagera River flows |
| 42% | SAL | 3 | 482 mi. long river that flows into the Don and rises near the city of Elista in Kalmykia, Russia |
| 41% | RANCE | 5 | River in NW France that flows into the English Channel between Dinard and Saint-Malo |
| 41% | MOHAWK | 6 | Largest tributary of the Hudson River in the state of New York, US |
| 40% | LADOGA | 6 | Lake —, body of water in Russia that drains through the River Neva into the Gulf of Finland |
| 40% | EMS | 3 | River rising in NW Germany that flows into the North Sea near Emden |
| 40% | SUWANNEE | 8 | US river rising in the Okefenokee Swamp on the Georgia-Florida border that flows to the Gulf of Mexico |
| 39% | POTOMAC | 7 | US river rising in West Virginia that flows into Chesapeake Bay |
| 39% | CHERWELL | 8 | Tributary of the River Thames that flows through Oxford |
| 38% | MOISIE | 6 | River in Quebec, Canada, that flows into the St Lawrence River near Sept-Iles |
| 38% | OMO | 3 | River in Ethiopia that flows south into Lake Turkana, Kenya |
| 38% | MURRAY | 6 | River rising in New South Wales, Australia, that flows into the sea at Encounter Bay |
| 38% | GODAVARI | 8 | River rising in Maharashtra, India sacred to Hindus that flows to the Bay of Bengal |
| 38% | EBRO | 4 | River in Spain that flows to the Mediterranean southwest of Tarragona |
| 38% | ITASCA | 6 | Lake —, source in Minnesota, US, of the Mississippi River |