There were many Nilometers in Egypt, but the most important ones were at Elephantine Island. The Nilometer was important as it measured the rise of the floodwaters of the Nile. If the Nile did not rise enough, the land would experience famine conditions. If the Nile rose too high, it would flood and destroy the villages. In three periods the Nilometers were restored: pharaonic, Roman, Muhammad Ali. Every temple in Egypt had a Nilometer because it was a symbol of life.
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