Of course we do not know the day or the hr. Jesus will return, but God also told us to be watching for it. We are talking about a singular 24 hr period that we cannot accurately predict, but we can be aware that it is coming at the end of all fulfilled prophecy.
More and more is coming to pass everyday, and God will not allow this country to stand during Jesus' 1000 yr reign of peace when we have so blatantly turned our backs on God.
About the water thing, there are acquifers beneath the gas reserves that have been depleted from the farming communities and lack of rain, so that is where the water is going. The whole country has been going through droughts, and it is only reasonable to assume that when the ground is dry, the water below is has been drained also.
Beside the pumping the energy companines are doing, we simply are not getting enough rain to refill the lakes, rivers, and underground acquifers, so the water that is pumped back into the ground goes down into the empty places, and leaves an open cavern to fill with oxygen. I don't know physics either, but i do know gravity. I also know what happens when a spark hits natural gas and oxygen that are not under pressure.
Time to get out there and get the news to others, so they can decide for themselves if they will follow God and live, or the unfortunate alternative.