Berean Study Bible
The waters rose and covered the mountaintops to a depth of fifteen cubits.

King James Bible
Fifteen cubits upward did the waters prevail; and the mountains were covered.

American Standard Version
Fifteen cubits upward did the waters prevail; and the mountains were covered.

Darby Bible Translation
Fifteen cubits upward the waters prevailed; and the mountains were covered.

Douay-Rheims Bible
The water was fifteen cubits higher than the mountains which it covered.

English Revised Version
Fifteen cubits upward did the waters prevail; and the mountains were covered.

Young's Literal Translation
fifteen cubits upwards have the waters become mighty, and the mountains are covered;