Parallel
Genesis 8:3
Brenton's English Septuagint · Berean Standard Bible
And the water subsided, and went off the earth, and after an hundred and fifty days the water was diminished, and the ark rested in the seventh month, on the twenty-seventh day of the month, on the mountains of Ararat.
The waters receded steadily from the earth, and after 150 days the waters had gone down.