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Lake Moeris

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Qarun lake lake moeris al fayoum egypt 11 07 2012


Lake Moeris (Ancient Greek: Μοῖρις, genitive Μοίριδος) is an ancient lake in the northwest of the Faiyum Oasis, 80 km (50 mi) southwest of Cairo, Egypt. In prehistory, it was a freshwater lake, with an area estimated to vary between 1,270 km² (490 mi²) and 1,700 km² (656 mi²).

Contents

Map of Qarun Lake, Faiyum Governorate, Egypt

It persists today as a smaller saltwater lake called Birket Qarun. The lake's surface is 43 m (140 ft) below sea-level, and covers about 202 square kilometres (78 sq mi).

It is a source for tilapia and other fish from the local area.

The prehistoric mammal Moeritherium was found in this area.

History

When the Mediterranean Sea was a hot dry hollow near the end of the Messinian Salinity Crisis in the late Miocene, Faiyum was a dry hollow, and the Nile flowed past it at the bottom of a canyon (2,400 m deep or more where Cairo is now). After the Mediterranean reflooded at the end of the Miocene, the Nile canyon became an arm of the sea reaching inland further than Aswan. Over geological time that sea arm gradually filled with silt and became the Nile valley.

Eventually, the Nile valley bed silted up high enough to let the Nile in flood overflow into the Faiyum hollow and make a lake in it. The lake is first recorded from about 3000 BC, around the time of Menes (Narmer). However, for the most part it would only be filled with high flood waters. The lake was bordered by neolithic settlements, and the town of Shedet grew up on the south where the higher ground created a ridge.

In 2300 BC, the waterway from the Nile to the natural lake was widened and deepened to make a canal which is now known as the Bahr Yussef. This project was started by Amenemhat III, or perhaps by his father Senusret III. This canal fed into the lake. This was meant to serve three purposes: control the flooding of the Nile, regulate the water level of the Nile during dry seasons, and serve the surrounding area with irrigation. There is evidence of ancient Egyptian pharaohs of the twelfth dynasty using the natural lake of Faiyum as a reservoir to store surpluses of water for use during the dry periods.

The immense waterworks undertaken by the ancient Egyptian pharaohs of the twelfth dynasty to transform the lake into a huge water reservoir gave the impression that the lake was an artificial excavation, as reported by classic geographers and travellers. The lake was eventually abandoned due to the nearest branch of the Nile shrinking from 230 BC.

Etymology

The name Moeris is a Greek version (reformed as if from Greek Μοῖραι "the Fates") from Egyptian mer-wer ‘great canal’. Amenemhat III, who started this project was also known as Moeris. In ancient Egypt, the lake was also variously called ‘the lake’, ‘pure lake’, and ‘Osiris’ lake’. During the Middle Kingdom, the whole area around the lake was often referred to as mer-wer as well. Similarly, the Late Egyptian word Piom ‘sea’, originally restricted to Lake Moeris, came to be used to refer to the city of Crocodilopolis (mod. Faiyum), then to the entire region in later times.

References

Lake Moeris Wikipedia


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