Mafraq ( Muhāfaẓat al-Mafraq, local dialects Mafrag or Mafra' ) is one of the governorates of Jordan, located to the north-east of Amman, capital of Jordan. It has a population of 287,300 (2010 estimate) making up 4.5% of Jordan's population. Its capital is Mafraq, which is known for its military bases. History Many Roman and Byzantine sites have been found throughout the governorate, most notably churches dating to the third century AD; believed to be two of the oldest purpose built churches in Christianity: and Roman water dams in Jawa, Ruwaished, and the city of Mafraq. The Jawa Dam is the oldest known dam in the world, dating back to 3000 B.C. Mafraq city also contains a Roman fort. During the British mandate period, Mafraq housed military facilities which are still in use today. The fifth division of the Jordanian Army is stationed in Mafraq. Geography The province is located in the eastern part of the kingdom of Jordan. It is the only governorate in Jordan that has borders with three countries: Iraq to the east, Syria to the north, and Saudi Arabia to the south. It is bordered by Irbid and Jerash governorates to the west, and by Zarqa governorate to the south. Mafraq governorate covers the second largest area in the kingdom, but yet the second smallest population density (after Ma'an). The climate is dry most of the year. The western region of the province is part of the fertile Houran plateaus, that extend through southern Syria, the Golan heights and northern Jordan. The eastern region is part of the barren Syrian Desert. At the eastern edge of the region is the 940m high (or 'Unayzah), at the border tripoint between Jordan, Iraq and Saudi Arabia. The Governorate is connected to Iraq through the Karameh Border Crossing, and to Syria through the Jabir Border Crossing. Demographics The population of Mafraq Governorate according to the census of 2004 was 244,188 of whom 30% is considered urban and 70% is rural. Jordanian citizens made up about 94% of the population. The Jordanian Department of Statistics population estimate for the year 2010 is 287,300 with a female to male ratio of 48.17 to 51.83 and a population density of 10.8 persons per km2. In 2011 and 2012, the civil war in Syria resulted in the immigration of more than 180,000 Syrian refugees to Jordan, mostly settled in Mafraq and Irbid Governorates.