Two of subway tunnels have 47 million gallons of water each in them

I was just listening to the head of the New York Subway system and he was saying how there is 47 million gallons of water each in two of the subway tunnels now. He said that first they need to get the 47 million gallons of water each out and then they need to search for structural integrity of the tunnels and tracks before they can reopen those subway lines through those tunnels. This likely will take some time to get 47 million gallons of water each out no matter what kind of pumps they use.