Genesis 7:6, 11-12, 24

Noah was six hundred years old when the floodwaters were on the earth.

In the six hundredth year of Noah’s life, in the second month, the seventeenth day of the month, on that day all the fountains of the great deep were broken up, and the windows of heaven were opened. And the rain was on the earth forty days and forty nights.

And the waters prevailed on the earth one hundred and fifty days.