| Question | Answer | % Correct |
|---|---|---|
| What major river flows through London? | Thames | 100%
|
| What river carved out the Grand Canyon? | Colorado | 97%
|
| What river passes through 4 European capitals before emptying into the Black Sea? | Danube | 92%
|
| What river forms the Texas-Mexico border? | Rio Grande | 87%
|
| The Amur River defines much of Russia's border with what country? | China | 84%
|
| Which U.S. state is separated from Manhattan by the Hudson River? | New Jersey | 82%
|
| What river forms the western border of Washington, DC? | Potomac | 79%
|
| Which world capital does the Vistula River flow through? | Warsaw | 76%
|
| What river valley in northern India and Pakistan was home to a Bronze Age civilization? | Indus | 74%
|
| What skinny West African country is completely centered around a river of the same name that it follows inland? | Gambia | 68%
|
| What is the longest river in Australia? | Murray | 66%
|
| What is the deepest river on Earth, with a max depth of 720 feet? | Congo | 58%
|
| In which African country do the Black, White and Red Volta rivers drain into Lake Volta? | Ghana | 53%
|
| What river does the isolated Siberian city of Yakutsk touch? | Lena | 50%
|
| What country contains the inland Okavango Delta, which disperses into wet grasslands? | Botswana | 47%
|
| In what city do the Mekong, Tonle Sap and Bassac rivers converge? | Phnom Penh | 37%
|
| What major tributary of the Amazon ends in Manaus, Brazil? | Rio Negro | 29%
|
| What German state named partially for a river contains the Ruhr Area? | North Rhine- Westphalia | 21%
|