California Department of Water Resources

Almost 200,000 people were ordered on Sunday to evacuate from the area below the Lake Oroville Dam, the tallest dam in the United States, after authorities said its emergency spillway could give way.
The state is now grappling with a massive dam spillway glitch in the Sierra foothills.
It takes lots energy to move, use and treat water. And it takes lots of water to cool power plants. With that thinking, things like desalination and ethanol make less and less sense.