You said "None of the other civilizations that were in existence at the time mention anything about this flood. Weird, eh?
It is a fairy tale."
There are many writings about such a flood from the same general era of history. So its almost like your ignoring evidence that you don't like.
No, most, but not all, civilizations are on navigable water ways that flood at times. Guess what that leads to? Myths. There are flood myths among many, but not all early civilizations, but they are of different times. They also vary quite a bit beside the obvious commonality of a giant flood. If they all told the same story or roughly the same time then you might have something but there is quite a bit of variation. And some early civilizations do not have a flood myth at all, or one that was so different that it could not be seen as the same myth. For example in nearby Egypt there was no Noah's Ark type flood. The closest that they have was a mass genocide by a god that caused a flood of blood. In other words it turned the river red. Does that sound at all like Noah's flood?
Egypt. The Egyptian flood myth begins with the sun god Ra, who feared that people were going to overthrow him. He sent the goddess Hathor, who was his eye, to punish the people. But she killed so many that their blood, flowing into the Nile River and the ocean, caused a flood. Hathor greedily drank the bloody water. Feeling that things had gone too far, Ra ordered slaves to make a lake of beer, dyed red to look like blood. Hathor drank the beer, became very drunk, and failed to finish the task of wiping out humanity. The survivors of her bloodbath started the human race anew.
By the way, that is no matter how you look at it extremely weak evidence for a flood. People make up stories all of the time. The physical evidence not only tells us that there was no flood, three is not a single sign of it. Instead it refutes all of the beliefs of Flood believers.