When the Nile floods how does the flooding affect all aspects of Egyptian life?

The Nile's yearly flood was important as when it flooded it not only watered crops, it also left behind a rich soil called silt behind. If the Nile flooded and there was too much water, the crops were distroyed. If there was not enough water, there was a famine and many would die. There had to be the correct amount of water for the Egyptians to grow crops to survive.