Bible Verses About Years: Length of, during the patriarchal age

In the six hundredth year of the life of Noe, in the second month, in the seventeenth day of the month, all the fountains of the great deep were broken up, and the floodgates of heaven were opened:

And the waters prevailed upon the earth a hundred and fifty days.

And the waters returned from off the earth going and coming: and they began to be abated after a hundred and fifty days.

Therefore in the six hundredth and first year, the first month, the first day of the month, the waters were lessened upon the earth, and Noe opening the covering of the ark, looked, and saw that the face of the earth was dried.