| Clue | River | % Correct |
|---|---|---|
| Longest in the world | Nile | 100%
|
| Largest in the world | Amazon | 97%
|
| One of the two potamoi defining Mesopotamia | Euphrates | 94%
|
| China's longest | Yangtze | 93%
|
| Namesake of a virus that caused a famous outbreak in West Africa in 2014 | Ebola | 86%
|
| Principal river of West Africa | Niger | 85%
|
| Vital waterway of Central and Western Europe | Rhine | 85%
|
| River of Rome | Tiber | 85%
|
| Famously crossed by Julius Caesar | Rubicon | 68%
|
| Major river draining the Great Lakes of North America | St. Lawrence | 68%
|
| Separates Manchuria from the Russian Far East | Amur | 52%
|
| Major river feeding the Ganges Delta | Brahmaputra | 51%
|
| Siberian river whose mouth is the world's longest estuary | Ob | 51%
|
| This "river" in New York City is actually a tidal estuary | East | 50%
|
| The Pyrenees mountains form the northern boundary of this river's basin | Ebro | 50%
|
| Mandalay sits on its eastern bank | Irrawaddy | 45%
|
| River system naturally connected to #1 via the Casiquiare distributary | Orinoco | 36%
|
| African river famous for its inland delta | Okavango | 29%
|
| Parallel to the Syr Darya | Amu Darya | 27%
|
| Tributary of the Indus; known as Iravati in the Vedas | Ravi | 13%
|