[aruanan]

A fifteen cubit flood would be 22.5 feet deep.

That was 15 cubits above the highest landforms, not a mean depth.

[dfwgator]

That was 15 cubits above the highest landforms, not a mean depth.

Riiiight! What's a cubit?

[TXnMA]

"That was 15 cubits above the highest landforms, not a mean depth."

Ah: "prevailed"...

So, if Everest existed then, the worldwide depth of the water at today's MSL would be 29,000 feet plus 22.5 feet = 29,022.5 feet...

IOW, ~5.5 miles of water covering the entire globe...

And the depth of the water in the mariana trench would have been over 12.25 miles...