[a_Turk]

Hard to imagine that the flood level was 13,300 feet above sea level at the time...

[El Cid]

Hard to imagine that the flood level was 13,300 feet above sea level at the time...

Actually the Ark would have been at sea level, at the time it 'docked'.
With respect to the topology and terrain -- the idea is that it was a lot more turbulent in its changes in the years following the Flood, than it is today.