No, ancient Egyptian civilization was always been dependent on the Nile not just for water but for the flooding that brings eroded trace minerals and deposits t

No, ancient Egyptian civilization was always been dependent on the Nile not just for water but for the flooding that brings eroded trace minerals and deposits them along the basin. That's why we have so much material on ancient Egyptian civilization: the desert is so arid and has been for Egypt's entire history that the normal processes that would break down papyrus or other organic matter were significantly slowed down as long as they were buried far enough away from the Nile.