I’ll answer in two words.
Martial Law.
Once declared everything can be ‘suspended’. For the good of the Country don’t ya know.
And under Executive Order (that has not been rescinded), the Feds can sieze your water supply on your land if the nation is under martial law. I remember reading about that when Clinton signed it. The Federal Government, by EO, established that under martial law, they have mineral rights to any property in the United States.