Did General Dissaray do any good? Lord Knows They tired. Science Question…
How long would have the Kids have had to left the water on to flood the Earth?
Assume: 5/8 " hose, 1/2 House Pipes, 1" feed to house. (Maybe 3/4" ) Any Math People here? 
Water pressure is the key m’boy, without this critical factoid your inquiry is the pointless, barking of a diseased mind.