You are saying that the world wide flood did not happen and that a large local flood does not fit the Bible story.
No, Brian, large regional floods have occurred in past history and in recent history.
But for Noah to being warned about the 100 years before it occur, if the flood was regional, it is utterly senseless to build an Ark, when he could have more easily and safely move his family to area not affected by this local flood.
But a large local flood does fit the Bible story, esp if there were many of them around the world (which geology suggests did happen) and if the world's populations were concentrated in the warmer regions because of the ice age and in the lower regions closer to the ocean, since the oceans were lower.
The Ice Ages ended 7000 YEARS BEFORE THE EARLY BRONZE AGE (3100 - 2000 BCE), so the notion that the ice ages were responsible for the Genesis Flood and for other myths, is rather tenuous, and the evidence don’t support any of them all, regardless if they were worldwide or local/regional.
There are no connection between myths and the ice ages.
Second, the ice sheets mostly covered Northern Europe and Asia, and North America, and some high mountainous regions, eg the Swiss Alps, Caucasian mountains, Tibetan Plateau and the Himalayas, the Rocky Mountains, the Andres, etc.
On the Swiss Alps for instance, the ice sheets was isolated, surrounded by areas not covered by the sheets.
And there were no ice sheets in Egypt, the Levant and Mesopotamia.
And don’t confuse what the myths say with geology, because geological evidence don’t show one massive flood, especially covering mountains as Genesis claim.