What is the longest river in North America?

The Ganges River is sacred in Hinduism. In which mountain range does it originate?

The Rhine River flows through several European countries before emptying into which body of water?

Which river forms most of the border between Zambia and Zimbabwe?

The Mekong River runs through six countries in Southeast Asia. Which of the following is not one of them?

The source of the White Nile is generally considered to be which lake?

Which South American river has the largest drainage basin in the world?

The Murray River is the longest river in Australia. Into which body of water does it empty?

Which river flows through the most capital cities in the world?

The Huang He, or Yellow River, is one of China's most important rivers. What gives it its distinctive color?