Test your knowledge of the world's rivers & lakes with our interactive rivers & lakes quiz! Can you answer all of the following questions and get a perfect score?

Click on the links that you think best answer each quiz question below. Good luck!

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1. The Great Lakes contain how many gallons of freshwater?
   
   
   1. 1,354 million
   2. 9 billion
   3. 6 quadrillion
   4. 14 quadrillion
2. Which is the world’s longest river?
   
   
   1. Zambezi
   2. Nile
   3. Mississippi
   4. Amazon
3. Which river carries the greatest volume of water?
   
   
   1. Mississippi
   2. Nile
   3. Yangtze
   4. Amazon
4. True or false: More than half of North America’s freshwater mussel species are threatened, endangered or extinct.
   
   
   1. True
   2. False
5. Which of these is not a freshwater mussel?
   
   
   1. Calamity banjo
   2. Monkeyface
   3. Black sandshell
   4. Round pigtoe
6. Which of these aquatic mammals is believed to have been driven to extinction in the last year?
   
   
   1. Boto (Amazon River dolphin)
   2. Baiji (Yangtze River dolphin)
   3. Ganges and Indus River dolphin
   4. La Plata dolphin
7. Hydropower supplies what percentage of the world’s electricity.
   
   
   1. 3 percent
   2. 11 percent
   3. 19 percent
   4. 27 percent
8. What human activity is responsible for 70 percent of global water withdrawals?
   
   
   1. Car washing
   2. Industrial solvent manufacture
   3. Irrigation for agriculture
   4. Iced tea production
9. True or false: More than 20 percent of the world's 10,000 recorded freshwater fish species have become extinct, threatened, or endangered in recent decades.
   
   
   1. True
   2. False
10. According to the United Nations, water-related diseases kill how many people each year?
    
    
    1. 760,000
    2. 1 million
    3. 2.7 million
    4. More than 5 million

Rivers & Lakes Quiz Scoring Guide

• 0-2 correct: Freshwater novice – Start over at our rivers & lakes habitat.
• 3-5 correct: Freshwater apprentice – Check out this rivers & lakes video to brush up your knowledge
• 6-8 correct: Freshwater ranger – Very good!  Send a free rivers & lakes ecard to friends and family to show your support of the world's freshwater.
• 9-10 correct: Freshwater conservationist – You're a real pro! Test your knowledge of the Earth's other habitats.