All Over the World
The earliest form of a dam.
What is a vertical water wheel?
It costs this much to maintain a dam.
What is $10,000,000?
The largest dam in the US.
What is the Grand Coulee Dam?
This is the river where the Three Gorges Dam is located.
What is the Yangtze River?
The country that produces the sixth most hydropower in the world.
What is Norway?
This is the biggest dam in the world.
What is the Three Gorges Dam?
A migrating fish that's travel route may be interrupted by hydropower plants.
What is a salmon?