posted on May, 25 2010 @ 04:35 PM
My memory of this is so bad one could argue that what I am about to say is not exactly offering to your inquiry.
I had seen a documentary, years ago, that dealt with exactly this. they shown a portion of the river that had clearly shifted to a new location,
causing drought around the old riverbed. I am not sure but I think this supposedly happened about 800-900 years ago. As to about where it happened,
I'd say near the border to Sudan but I won't bet a dime on it - could be anywhere along the Nile riverbed to be frank.
What made it stick to my memory was a reference to the drought and the plight of the people that suffered from it, at one point it was reported people
eating their own children in desperation caused by the extreme hunger. I have to look into this more but I think the dates were as I said above.