The Faiyum Oasis (or Al-Fayoum Oasis, Al Fayyum Oasis, and other variations in spelling) is a depression or basin in the desert immediately to the west of the Nile south of Cairo. The extent of the basin area is estimated at between 1,270 km² (490 mi²) and 1700 km² (656 mi²). The basin floor comprises fields watered by a channel of the Nile, the Bahr Yussef, as it drains into a desert depression to the west of the Nile Valley. The Bahr Yussef veers west through a narrow neck of land north of Ihnasya, between the archaeological sites of El-Lahun and Gurob near Hawara; it then branches out, providing rich agricultural land in the Faiyum basin, draining into the large saltwater Lake Moeris (Birket Qarun). The lake was freshwater in prehistory but is today a saltwater lake. It is a source for tilapia and other fish for the local area.
Differing from typical oases, whose fertility depends on water obtained from springs, the cultivated land in the Faiyum is formed of Nile mud brought down by the Bahr Yussef, 24 km (15 miles) in length. Between the beginning of Bahr Yussef at El-Lahun to its end at the city of Faiyum, several canals branch off to irrigate the Faiyum Governorate. The drainage water flows into Lake Moeris.
Faiyum (Arabic: الفيوم al-Fayyūm pronounced [elfæjˈjuːm]; Coptic: ̀Ⲫⲓⲟⲙ Phiom<span style=margin-left:1px">) is a city in Middle Egypt. Located 100 kilometres (62 miles) southwest of Cairo, in the Faiyum Oasis, it is the capital of the modern Faiyum Governorate. Originally called Shedet in Ancient Egypt, the Greeks called it Crocodilopolis or Krocodilopolis, the Romans Arsinoë. It is one of Egypt's oldest cities due to its strategic location.
Its name in English is also spelled as Fayum, Fayoum, Al Fayyum or El Faiyūm. Faiyum was previously officially named Madīnet el Faiyūm (Arabic for The City of Faiyum). The name Faiyum (and its spelling variations) may also refer to the Faiyum Oasis, although it is commonly used by Egyptians today to refer to the city.
The modern name of the city comes from Coptic ̀Ⲫⲓⲟⲙ /Ⲡⲉⲓⲟⲙ epʰiom/peiom (whence the proper name Ⲡⲁⲓⲟⲙ payom), meaning the Sea or the Lake, which in turn comes from late Egyptian pꜣ-ymꜥ of the same meaning, a reference to the nearby Lake Moeris; the extinct elephant ancestor Phiomia was named after it.
Faiyum may refer to: