Two things jump out at me here...
Firstly, the end point that is marked by the arrow on the map has an elevation of at least a kilometer according to this map. If the water level was one kilometer, wouldn't the flooding have covered a whole lot more area?
Secondly, a localised flood is entirely at odds with what is written in the Bible. The Bible clearly states, "
6:7 And the LORD said,
I will destroy man whom I have created from the face of the earth;
both man, and beast, and the creeping thing, and the fowls of the air;
for it repenteth me that I have made them." God wanted to wipe out ALL life on Earth except for Noah. Humanity had spread beyond the area shown in your map, so if God wanted to wipe out all the people, this flood wasn't going to do it. And if it was a local flood, why not simply tell Noah to get out of there for a little while? According to
Answers In Genesis, Noah had 55-75 years to build the ark. Surely he could have walked out of the flood area in that time! And why the need to gather all the animals? If the flood was a localised one, then there was little risk of extinction. Cattle would have survived, as would most other species, since they were not confined to that single area of land.
In short, claiming the flood was local means a lot of what God did - instructing Noah to build the ark, gathering all the animals, etc - simply makes no sense. The Biblical story ONLY makes sense if it was indeed a truly global flood - and there is no evidence to support that, and plenty of evidence against it. Your 90% accurate claim seems very difficult to justify.