Other people have summed up well the arguments against the evidence for the flood you have presented. I just want to add something to this.
One might ask why there are so many stories about a "world wide" flood in different cultures around the world? There are 2 main reasons for this coincidence.
(1) For the people in the Bronze Age, a flood was a pretty big deal. It's still a pretty big deal today. It's a natural disaster that happened just often enough to be a bigger deal than the rarer natural disasters like earthquakes and volcanic eruptions but not often enough to kill off the civilizations back then.
Unlike today, there was no national aids, no insurance, and certainly no international aids. There was no helicopters to rescue stranded people. No relief shelters. In other words, to the ancients a flood would have meant the end of their particular world, which brings me to the second reason.
(2) For the people in the Bronze Age, the world to them was pretty much the local area that they grew up in. They imagined the world to be a big place, but to our standard to day their world was tiny and insignificant. A local flood to these people literally meant judgement day for their whole world.
Again, you have to remember that we are talking about people in the early to mid Bronze Age. Life for most people was a daily struggle. The normal person was malnourished, diseased, overworked, underpaid, and certainly very ignorant of everything except the work he did. Now, imagine him waking up one morning and seeing all around him nothing but water, and the water level is rising by the minute. Trees are being washed away. People are screaming. Houses are falling and washed away. As far as the eye can see, there is no escape. Oh, and have I mentioned that there was no helicopters back then to help rescue these people? Now, use your imagination and see if you can at least empathize with these Bronze Age peasants that got caught in a local flood. To them, the world had just started to end.
In fact, more than 200 ancient and present civilizations have reported different cultural accounts of a worldwide flood.
Let me ask you this. The ancient people of the Bronze Age didn't even know the world was round. If there was a world wide flood, how on Earth do you suppose they figured out that there was no place in the world that was not flooded? Disclaimer:
Occasionally, owing to the deficiency of the English language, I have used he/him/his meaning he or she/him or her/his or her in order to avoid awkwardness of style.
He, him, and his are not intended as exclusively masculine pronouns. They may refer to either sex or to both sexes!