The Al-Wehda Dam (), formerly known as Maqarin Dam, is a

roller-compacted concrete Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for po ...

gravity dam A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation. Gravity dams are designed so that each section of the dam is ...

on the

Yarmouk River The Yarmuk River (, ; Greek: Ἱερομύκης, ; or ''Heromicas''; sometimes spelled Yarmouk) is the largest tributary of the Jordan River. It runs in Jordan, Syria and Israel, and drains much of the Hauran plateau. Its main tributaries are ...

on the border between Syria and Jordan. It can hold up to water and is designed to provide Jordan with water for both human consumption and agriculture. Water from the reservoir is diverted through a diversion weir at Addassiyah downstream of the Al-Wehda dam to the

King Abdullah Canal The King Abdullah Canal is the largest irrigation canal system in Jordan and runs parallel to the east bank of the Jordan River. It was previously known as the East Ghor Main Canal and renamed in 1987 after Abdullah I of Jordan. Water sources and ...

where it is mixed with other freshwater sources. Some of the water from the canal is then pumped to Amman to be used as drinking water, after being treated in the Zai water treatment plant. The discharge of effluents from adjacent agricultural lands has caused algae growth and

eutrophication Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the s ...

especially in spring. Construction was funded by the

Arab Fund for Economic and Social Development The Arab Fund for Economic and Social Development (AFESD) is a Kuwait-based pan-Arab development finance institution. All member-states of the Arab League are members of the AFESD. As of 2003, it held around US$7.3 billion in assets. The AFESD ...

(80%), the Abu Dhabi Development Fund (10%) and the Government of Jordan (10%). In February 2004

King Abdullah II Abdullah II (Abdullah bin Hussein; born 30 January 1962) is King of Jordan, having ascended the throne on 7 February 1999. He is a member of the Hashemites, who have been the reigning royal family of Jordan since 1921, and is traditionally reg ...

of Jordan and Syrian President

Bashar al-Assad Bashar al-Assad (born 11September 1965) is a Syrian politician, military officer and former dictator Sources characterising Assad as a dictator: who served as the president of Syria from 2000 until fall of the Assad regime, his government ...

launched the construction of the dam. Turkey's Ozaltin Company constructed 60 per cent of the dam, while the remaining 40 per cent were carried out by Marwan Alkurdi Company and the National Company for Roads and Bridges. The sharing of the waters of the Yarmouk River between the two countries is governed by a 1987 treaty that set up a Jordanian-Syrian Yarmouk River Basin Higher Committee. The agreement was renewed in 2001 when the design of the dam was modified, reducing the storage capacity from 480 to 115 million cubic meters, and removing a hydropower plant that had initially been foreseen from the plans. According to a statement made by the Jordanian Minister of Water and Irrigation, Mousa Jamani, in April 2012 Syria violates the water sharing agreement, because Syrian farmers downstream of the dam use more than the 6 million cubic meters per year that they are entitled to for irrigation along the riverbank. The Minister also said that "since the agreement was signed, the number of Syrian dams increased from 26 to 48, while around 3,500 wells were drilled to pump water from the river basin", thus decreasing the amount of water flowing into the dam's reservoir. Until the 1960s, the Yarmouk River’s flow used to reach 16 cubic meters per second, but has since dropped to only one cubic meter per second. The Syrian banks of the Yarmuk on the border, as well as the Syrian half of the dam, were captured by the

Israel Defense Forces The Israel Defense Forces (IDF; , ), alternatively referred to by the Hebrew-language acronym (), is the national military of the State of Israel. It consists of three service branches: the Israeli Ground Forces, the Israeli Air Force, and ...

on 17 December 2024 during their invasion into Syria. "Israel took control of the Al-Wahda Dam on the Yarmouk river reservoir near the town of Al-Qusayr in Syria’s

Daraa Governorate Daraa Governorate ( / ALA-LC: ') is one of the fourteen Governorates of Syria, governorates (provinces) of Syria. It is situated in the south-west of the country and covers an area of 2594 km2. It is bordered by Jordan to the south, Quneitra G ...

on the border with the Kingdom of Jordan, which provides for approximately 30% of Syria’s fresh water supply, and 40% of the fresh water supply of Jordan", reported Israeli journalist Amir Tsarfati.

References

{{commons category Dams in Syria Jordan River basin Dams in Jordan Dams completed in 2011 Buildings and structures in Daraa Governorate Roller-compacted concrete dams Jordan–Syria relations