That is hardly an answer. There are no near surface "springs below" that could even come close to flooding the Earth. If you go deep you end up cooking Noah and company. And sources above would not do it if it was the atmosphere. The atmosphere can only hold a limited amount of water. If you go into space you once again cook Noah and family as a result.
"The atmosphere can only hold a limited amount of water. "
Well, that's all we agree on.