Nilometer
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A nilometer is a structure for measuring the Nile River's clarity and water level during the annual flood season in Egypt. There were three main types of nilometers, calibrated in Egyptian cubits: a v
Measuring shaft of the nilometer on Roda Island, Cairo built in 861 AD on the orders of the Abbasid Caliph al-Mutawakkil
Nilometer shown c.1800 at the southern tip of Roda Island
Palermo Stone, 5th Dynasty (2392 B.C.E-2283 B.C.E)
Conical structure covers the nilometer on southern tip of Roda Island in the Nile River at Cairo. The structure is modern but the nilometer dates from 715 AD.
Cairo
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Cairo is the capital and largest city of Egypt and the Cairo Governorate. It is home to more than 9.8 million people. It is also part of the largest urban agglomeration in Africa, the Arab world, and
Nilometer
…water. One that follows this simple design, albeit housed in an elaborate and ornate stone structure, can still be seen on the island of Roda in central Cairo (). This nilometer visible today dates as far back as AD 861, when the Abbasid caliph al-Mutawakkil ordered its construction, overseen by the astronomer…
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