Genesis 8:13

Now in the six hundred and first year [of Noah’s life], on the first day of the first month, the waters were drying up from the earth. Then Noah removed the covering of the ark and looked, and the surface of the ground was drying.

Genesis 7:11

In the six hundredth year of Noah’s life, on the seventeenth day of the second month, on that same day all the fountains of the great deep [subterranean waters] burst open, and the windows and floodgates of the heavens were opened.

Treasury of Scripture Knowledge

Summary

And it came to pass in the six hundredth and first year, in the first month, the first day of the month, the waters were dried up from off the earth: and Noah removed the covering of the ark, and looked, and, behold, the face of the ground was dry.

General references

Bible References

Six

Genesis 7:11
In the six hundredth year of Noah’s life, on the seventeenth day of the second month, on that same day all the fountains of the great deep [subterranean waters] burst open, and the windows and floodgates of the heavens were opened.

General references

Genesis 7:6
Noah was six hundred years old when the flood (deluge) of water came on the earth [covering all of the land].