Parallel
Genesis 7:20
Swete's Septuagint · Berean Standard Bible
δέκα πέντε πήχεις ἐπάνω ὑψώθη τὸ ὕδωρ, καὶ ἐπεκάλυψεν πάντα τὰ ὄρη τὰ ὑψηλά.
The waters rose and covered the mountaintops to a depth of fifteen cubits (note: 15 cubits is approximately 22.5 feet or 6.9 meters.).