Genesis, chapter 5, verses 22-24, Enoch would have been taken by God so that he would not experience death and would certainly be spared the wrath of the flood:

“And Enoch walked with God, after he begat Methuselah, three hundred years, and begat sons and daughters. And all the days of Enoch were three hundred and sixty-five years. And Enoch walked with God; and he did not appear again, because God took him for himself. ”