Genesis 7:6, 11-12, 24

Noah was six hundred years old when the flood of waters came upon the earth.

In the six hundredth year of Noah’s life, in the second month, on the seventeenth day of the month, on that day all the fountains of the great deep burst forth, and the windows of the heavens were opened. And rain fell upon the earth forty days and forty nights.

And the waters prevailed on the earth 150 days.