Location Of The Garden Of Eden

[Solvedit]

Rivers on earth do not split into more rivers. 

Some do.  Look at the Nile.  Plus, it could have been a man-made garden which diverted a small spring on purpose into four routes.

[quintessentone]

The Middle East and Northern Africa have been getting steadily drier.  There were wetlands in what is now the Sahara 10,000 years ago.  The Arabian peninsula need not have been a desert then.

However, I maintain that the rivers need not have been large or identifiable today especially if their former riverbeds were in a city.

Exactly, so Eden could have been a place with a lush garden back then.