One of the reasons why irrigation was easier for Egyptians than for Mesopotamians is that flooding in Nile - which formed the basis for irrigation in Egypt - was more regular and predictable than flooding of Tigris and Euphrates ( the rivers in Mesopotamia).
Additionally, Nile flooded at the time that was much more beneficial for the crops (October), while in Mesopotamia the rivers flooded in late spring, which was too late for some and too early for other crops.
So, the farmers in Egypt had a much easier job, as nature was helping them.
