King James Version
And the waters decreased continually until the tenth month: in the tenth month, on the first day of the month, were the tops of the mountains seen.English Standard Version
And the waters continued to abate until the tenth month; in the tenth month, on the first day of the month, the tops of the mountains were seen.New International Version
The waters continued to recede until the tenth month, and on the first day of the tenth month the tops of the mountains became visible.