Did you know these water facts?
A dam is a barrier that blocks flowing water or sends it in a new direction.
Each day, the Sun evaporates 1,000,000,000,000 (a trillion) tons of water.
Beavers create their own dams from sticks and mud as protection from predators and also to help provide easy access to food.
The weight of the water pushing against a dam creates tremendous pressure.
Many dam failures have occurred in the past, these disasters can cause significant damage and threaten lives.
The only water we will ever have on earth is what we have now.
In a 100-year cycle, water spends 98 years in the ocean, 2 months as ice, 2 weeks in lakes and rivers, and about 1 week in the atmosphere.
There are more than 90,000 dams in the United States alone
A dam’s shape and thickness must work together to hold the water back, even when rainfall increases the pressure.