Water Politics in the Jordan River Basin

The Jordan River forms part of a transboundary drainage system connecting Israel, Jordan, Syria, and Lebanon and discharges southward into the Dead Sea, a terminal lake. Its northern headwaters include the Hasbani, Banias, and Dan/Tall al-Qadi systems, while the Yarmouk joins the Jordan south of the Sea of Galilee and supplies up to half of the lower river's flow.[5][6] Historical accounts estimate that approximately 1.0–1.3 billion cubic meters once flowed annually toward the Dead Sea before large-scale diversion.[1][2]

Half of the water flowing into the Sea of Galilee originates in Syria and Lebanon, making upstream flows and relations with neighboring states a critical element of Israel's water security.[4] The Wazzani River is the main source of the Hatzbani, which contributes approximately 25% of the Jordan River's water.[4] These upstream dependencies mean that diversion works or changes to tributary flows in Syria or Lebanon can directly affect Israel's freshwater supply.

Decades of intensive diversion have fundamentally altered the river's hydrology. A 2015 study reported that damming the Lower Jordan's main tributaries reduced its annual flow by 90%, leaving a mixed flow of polluted and saline sources.[3] A 2006 account estimated that the Jordan supplied the Dead Sea with about 1.3 billion cubic meters annually before human diversion but only about 200 million cubic meters at the time of publication; it also reported that the Dead Sea had fallen 25 meters over 120 years.[1] A 2013 report cited in Israeli media put annual discharge into the Dead Sea at between 20 and 200 million cubic meters, while EcoPeace's Israeli director estimated no more than 70 million cubic meters at that time.[7] A 2009 measurement found the southern Jordan receiving only 20–30 million cubic meters, with the remainder composed largely of sewage, fish-farm water, agricultural return flows, and saline spring water.[2] These estimates concern different years, locations, and methods and are not directly interchangeable.

Formal international efforts to allocate the Jordan basin's water began in 1953, when the United States dispatched envoy Eric Johnston to negotiate a unified regional development plan. The initiative drew on proposals prepared for UNRWA by the Tennessee Valley Authority, along with subsequent Arab and Israeli counterproposals.[8] Johnston's plan aimed to develop the Jordan and Yarmouk waters for irrigation in the Jordan Valley; American officials also saw it as potentially helping address the Arab refugee problem and the broader Arab-Israeli dispute.[9]

By the end of 1955, the parties had produced an overall plan that was technically acceptable to the interested states. Coordinated development was broadly accepted, although the precise role of Lake Tiberias as a principal reservoir remained subject to further arrangements.[8] A U.S. presidential report described an approximate allocation of 60% of the system's water to Lebanon, Syria, and Jordan and 40% to Israel, with a proposed neutral international authority to monitor deliveries.[8] A State Department summary gave Lebanon 35 million cubic meters (MCM) from the Hasbani; Syria 132 MCM from the Banias, Jordan, and Yarmouk; Jordan 720 MCM from the Yarmouk, Jordan, and side wadis; and Israel 25 MCM from the Yarmouk, with remaining Jordan River waters available for its use subject to specified deliveries.[10] An Israel State Archives account recorded an earlier set of proposed shares as Jordan 63.5%, Israel 32.5%, and Syria 4%.[9]

The negotiations were protracted and contentious. Israel objected to using Lake Tiberias as a central reservoir, limiting water use to the Jordan basin, and excluding the Litani River; it also sought a larger allocation and guarantees regarding sovereignty and the authority of a proposed water master.[9] A January 1955 proposal offered Israel 440 MCM and a possible waiver of the lake's use as a general reservoir, but continuing disagreements and a revised October proposal reduced Israel's share by 15 MCM.[9] A related dispute arose over Israeli works at Jisr Banat Ya'aqub: Israel began building a canal in the demilitarized zone with Syria on September 2, 1953, stopped after three weeks following Syrian objections, and faced proceedings at the U.N. Security Council in October 1953.[11]

Despite technical agreement, the Arab League Political Committee did not politically endorse the Johnston Plan and returned it for further consideration.[12] A U.S. diplomatic account attributed Arab reluctance partly to concern that allocations enabling Israel to irrigate the Negev could encourage Jewish immigration and territorial expansion.[13] An August 1955 letter from the Arab Higher Committee for Palestine urged Arab governments to reject the plan, alleging that it would place the Hasbani, Banias, Tall al-Qadi, Yarmouk, and Jordan waters within reach of Zionist exploitation.[5]

Despite the absence of formal ratification, implementation proceeded informally. Following a secret 1958 National Security Council decision, U.S. assistance was used to keep Israeli and Jordanian water projects consistent with the Johnston Plan—what a U.S. memorandum called "piecemeal but unadvertised execution."[12] About $6 million in U.S. funds went to Jordan's East Ghor irrigation project and about $30 million was made available for Israel's water-development program.[12] Israel gave the United States written assurances, qualified by its position that the arrangement depended on Arab acceptance of an agreed plan within a reasonable time.[12]

Israel's National Water Carrier became the central infrastructure project linking the Jordan basin to the country's population centers and southern agricultural zones. An initial diversion canal at Jisr Banat Ya'aqub was begun in 1953 but stopped after three weeks following Syrian objections.[11] The carrier was built between 1953 and 1964 and began operating on June 10, 1964, conveying water from the Sea of Galilee toward central and southern Israel.[6][14] A later academic analysis described diversion of approximately 300 MCM from the Sea of Galilee to central Israel as the existing policy it evaluated against desalination.[15]

U.S. diplomatic records from 1961 anticipated that Israel would begin withdrawing water through a nine-foot conduit to the Negev, with maximum capacity expected to reach 450 MCM within ten years.[12] Those records warned that Arab governments were expected to resist and that hostilities could not be ruled out, noting discussion of possible countermeasures involving diversion of Jordan headwaters in Syria and Lebanon.[12]

The carrier's completion was followed by a dangerous escalation. A Ynet historical account says Syria and Lebanon repeatedly attempted to divert the sources of the Jordan River, Israel responded with fire, and the IDF and Syrian army became involved in heavy fighting described by the article as the "War for Water."[16] A March 1965 U.S. National Intelligence Estimate assessed that Israeli strikes against diversion projects in Syria were probable if those projects threatened Israel's minimum water requirements. It predicted that a strike would probably elicit an Arab military response, most likely from Syria, while both sides would try to avoid a general war.[17]

In April 1965, Israeli Prime Minister Levi Eshkol warned the U.S. ambassador that if Jordan accepted water diverted from Lebanon or Syria, Israel would reopen the question of Jordan's use of the Yarmouk. He said Arab diversion could cut off 150 MCM of Israel's supply and warned that Israel might use force.[18] The ambassador reiterated American opposition to using military means and clarified that U.S. support for Israel obtaining its share did not extend to endorsing force.[18]

Jordan's parallel infrastructure development resulted in the East Ghawr Canal, built in 1964 to irrigate about 30,000 acres east of the Jordan River.[6] An Arab League Yarmouk development project begun in 1964 was intended to divert northern Jordan headwaters to the Yarmouk and build a dam on the Syrian-Jordanian border. Israeli attacks on construction sites in Syria in 1965 and 1966 and Israel's 1967 occupation of the Golan Heights halted the project.[6]

The most detailed and legally binding bilateral basin arrangement emerged from the Israel–Jordan peace treaty, signed on October 26, 1994. Article 6 recognizes the parties' agreed allocations in the Jordan and Yarmouk rivers and Araba/Arava groundwater and commits both states to manage their water resources without harming the other party's resources.[19] The treaty acknowledges that both countries' water resources are insufficient to meet their needs and calls for cooperation on developing new sources, reducing waste, preventing contamination, alleviating shortages, exchanging information, and conducting joint research.[19] The treaty's water commitments are given operational form in Annex II.[19]

Annex II sets out seasonal allocation arrangements for the Yarmouk River. During the summer period, May 15–October 15, Israel pumps 12 MCM and Jordan receives the remainder of the flow. During the winter period, October 16–May 14, Israel pumps 13 MCM and Jordan is entitled to the rest subject to the annex's provisions.[20] Jordan additionally concedes 20 MCM of Yarmouk water to Israel in winter in exchange for Israel transferring 20 MCM from the Jordan River to Jordan in summer.[20] Jordan is also entitled to store a minimum average of 20 MCM of winter Jordan River floodwater south of the river's confluence with the Yarmouk and to receive 10 MCM annually from desalination of saline springs. Until the desalination facilities operate, Israel is to supply 10 MCM of Jordan River water at the specified location.[20]

The annex commits Israel and Jordan to cooperate in finding sources for an additional 50 MCM per year of drinkable water for Jordan, with a plan to be developed by the Joint Water Committee and submitted to both governments.[20] It also calls for a cooperative diversion and storage dam on the Yarmouk immediately downstream of the 121/Adassiya Diversion and a Jordan River storage system that would enable Jordan to store winter floods, with Israel permitted to use up to 3 MCM annually of added storage capacity.[20]

Annex II establishes a Joint Water Committee with three members from each country. The parties undertake to protect shared waters from pollution and unauthorized withdrawals, monitor water quality jointly, exchange relevant data, and treat municipal and industrial wastewater before discharge to standards permitting unrestricted agricultural use.[20] Artificial changes to the Jordan or Yarmouk courses require mutual agreement, while projects likely to affect flow or quality along the shared boundary require six months' advance notice and committee discussion.[20]

Israel began pumping water to Jordan in June 1995 through a 3.3-kilometer pipeline from Lake Tiberias to the King Abdullah Canal, at a reported cost of $5 million.[21] The 1996 Oslo water agreement among Jordan, Israel, and the Palestinian Authority established a cooperative framework to improve water management, upgrade pipelines, explore ways to generate additional freshwater, and create a commission to oversee joint development of new sources, although it did not address allocation.[21] Wider regional efforts were hindered by the absence of a comprehensive Arab-Israeli political settlement and by disputes among Arab states.[21]

Implementation of the treaty's water provisions produced disputes soon after its signing. A 1997 Globes report recorded sharply different accounts of what Israel owed: Israeli officials described a planned 150-MCM increase in three 50-MCM tranches—one delivered directly, a second dependent on storage and desalination infrastructure, and a third requiring joint development. Jordanian sources said the second tranche was Israel's unilateral obligation and had not been delivered.[22] The Israeli side proposed financing half the costs of the second tranche and suggested German grant money for water projects; Jordan rejected the proposals.[22]

Subsequent agreements expanded Israeli transfers. A 2010 Israel–Jordan arrangement provided for up to 50 MCM of additional water for Jordan on top of a similar quantity already supplied from the Sea of Galilee, in exchange for Jordan sending water to Israel from a planned Aqaba desalination plant.[23] An October 2021 agreement raised the volume sold by Israel to Jordan, with the amount expected to reach 100 MCM over the following year; the reported price rose from $0.04 to $0.65 per cubic meter.[24] An INSS analysis gives 55 MCM annually as the commitment under the treaty and subsequent agreements, describes a 50-MCM increase for three years beginning in July 2021, and refers to 100 MCM as the amount then being provided, without fully reconciling those figures.[25]

A significant proposed project was formulated in November 2022 under UAE auspices. Under the "Prosperity" or "Water for Energy" project, Israel would sell Jordan 200 MCM of desalinated water annually and Jordan would sell Israel renewable electricity.[25] After the outbreak of the Gaza war, Jordan suspended signing the implementation agreement.[25] A separate December 2013 memorandum signed by Israel, Jordan, and the Palestinian Authority proposed an Aqaba desalination plant with 80 MCM capacity and a Red Sea–Dead Sea pipeline, assigning half the desalinated supply to Israel for sharing with Palestinians and the remainder to Jordan.[26] The source does not establish that the proposed pipeline entered operation.

A 2026 report distinguished the treaty supply from a supplementary arrangement. It stated that Israel continued to supply Jordan with 50 MCM annually under the treaty, while a separate 2021 agreement for an additional 50 MCM per year had not been renewed after November 2025.[27] Jordan had sought an extension and a larger additional quantity, and the renewal question became entangled with deteriorating bilateral relations, drought, and water scarcity.[27]

Jordan's underlying water crisis gives urgency to these arrangements. The INSS analysis describes Jordan as one of the world's most water-scarce countries, with a per-capita water quota of 61 cubic meters per year.[25] Some Amman neighborhoods receive water once a week for 24 hours, while pipeline losses account for about 48% of Jordan's water supply.[25] Population growth, refugee inflows, reduced rainfall, climate change, water theft, and infrastructure deterioration compound the pressure.[25] Jordan's National Carrier project, approved as part of its 2023–2040 water strategy, envisions a desalination facility at Aqaba linked to Amman by a 457-kilometer pipeline, targeting 300 MCM per year at an estimated cost of $2.5 billion, with completion expected by the end of the decade.[25]

Beyond bilateral arrangements, the Madrid peace process established multilateral working groups, including a Working Group on Water Resources. A Jerusalem Center for Security and Foreign Affairs account says the group was organized with the United States as gavelholder and Japan and the European Union as co-organizers; it addressed water data, management and conservation, supply, and regional cooperation.[28] The account reports that the group held eight plenary meetings, with its last meeting in Amman in June 1995, and reached agreement in February 1996 on a declaration concerning cooperation on water-related matters and new and additional water resources.[28] It identifies the Water Data Banks Project and the Middle East Desalination Research Center in Muscat among the group's outcomes.[28]

These multilateral efforts remained constrained by the wider political environment. The Congressional Research Service reported that political deadlock and violence prevented Israelis and Palestinians from finalizing water-management agreements tentatively reached during the Oslo process and that the Palestinian Authority demanded a fair share of Jordan River flow.[29] It also described regional cooperation to curb overuse of scarce water as having suffered because of the Arab-Israeli conflict.[29]

Water division among Israel, Lebanon, and Syria has historically been governed by unwritten understandings dating from the 1920s, intended to preserve the status quo and minimize disputes. These arrangements were not binding and depended on the goodwill of Syria and Lebanon.[4] In 2001, Lebanon made two attempts—one in March and one in August—to alter water use in the Hatzbani basin. Israel condemned the actions but did not respond militarily, and Israeli concerns about the precedent formed part of the context for the more serious Wazzani dispute the following year.[4]

In September 2002, a Lebanese project carried out by the Council of the South, described as affiliated with the Amal movement, proposed piping water from the Wazzani spring to dozens of villages in southern Lebanon.[4] The planned diversion could reach 9,000 cubic meters per day, with the pipeline portion expected to be completed by the end of 2002, followed by a pumping station and reservoir.[4] The amount potentially diverted from Israel was estimated to be sufficient to lower the Sea of Galilee by almost one inch.[4]

The dispute immediately escalated into a broader political confrontation. Israeli Prime Minister Ariel Sharon opposed the project and called it "a pretext for war."[4] Lebanese President Emile Lahoud linked the water issue to the Shebaa Farms, arguing that Israel's presence there and its alleged control of Lebanese waters should end.[4] Israeli defense officials believed Hizballah might be involved in the initiative, while Hizballah leader Hassan Nasrallah described work at the source as a "new victory" for Lebanon.[4] The United States sent water experts to the site on September 16, 2002, to examine the project and possible alternatives for meeting southern Lebanese villagers' needs.[4]

Lebanon argued that southern water demand had grown after residents returned following Israel's withdrawal and that Lebanon was entitled to reparations for alleged Israeli "plundering" of rivers during the occupation.[4] Israel denied using Lebanese water during its occupation, asserting that its forces and some Lebanese villages in the Security Zone were supplied with Israeli water.[4] The confrontation illustrated the fragility of the nonbinding understandings governing Israeli, Lebanese, and Syrian water relations and the absence of an effective regional dispute-settlement mechanism.[4]

The aggregate effect of diversion from the Jordan basin has been severe ecological degradation across the river and the Dead Sea. A 2015 study reports that damming the Lower Jordan's main tributaries reduced its annual flow by 90%, leaving a degraded channel carrying polluted and saline water; isotope analyses identify lithology and sewage as major contributors to salinity.[3] The Congressional Research Service reported that up to 95% of the Jordan's southward flow had been diverted for agricultural and industrial uses, with untreated sewage also entering the river.[29] It attributed a 33% decline in Dead Sea surface area over 55 years and a drop of about three feet per year principally to river diversion.[29]

A 2006 account identified the main diversion infrastructure as Israel's National Water Carrier and Degania Dam, Jordan's King Abdullah Canal, and a Syrian dam on the Yarmouk. Before human diversion, the Jordan supplied the Dead Sea with approximately 1.3 billion cubic meters annually, compared with roughly 200 million cubic meters at the time of publication.[1] High evaporation and Israeli and Jordanian mineral-extraction operations also contributed to the Dead Sea's negative water balance.[1]

A regional study presented at an Israeli-Jordanian-Palestinian conference in Amman in 2010 estimated that approximately 98% of the Jordan River's former flow had been appropriated in recent generations. It attributed approximately 46% of withdrawals to Israel, mainly through the National Water Carrier; 25% to Syria, through dams on the Yarmouk and its tributaries; and 23% to Jordan, including through the King Abdullah Canal, with Palestinians accounting for only a few percentage points.[2] The listed figures do not fully reconcile with the overall 98% estimate. The study also reported that roughly half of the river's former biological habitats had been lost and that military zones, fences, mines, and other access restrictions complicated research along parts of the river.[2]

Academic research comparing policy options found that replacing the existing policy of diverting 300 MCM from the Sea of Galilee to central Israel with desalinated water from Mediterranean-coast plants would cost more and use scarce coastal land and energy. When the researchers included non-use values associated with the Sea of Galilee, Dead Sea, Jordan River, and Mediterranean coast, however, the preferred policy shifted toward desalination.[15]

At the 2022 climate summit in Sharm el-Sheikh, Israel and Jordan signed a declaration of intent on ecological restoration and sustainable development of the Jordan River.[30] The parties agreed to address pollution through wastewater-treatment facilities and improved sewage infrastructure, promote sustainable agriculture and reduced chemical-pesticide use, and consider regional tourism and a research center for river restoration.[30] The declaration recognized that restoring the river required cross-border action as reduced precipitation and climate change intensified the ecological crisis.[30]

Because Israel and Jordan acknowledge that their existing water resources are insufficient to meet their needs, the treaty framework explicitly commits them to finding additional supply. Annex II directs the countries to cooperate in locating sources for an additional 50 MCM per year of drinking-standard water for Jordan, with a plan to be developed through the Joint Water Committee.[20] Israel's interim obligation under the saline-springs provision is to supply Jordan with 10 MCM of Jordan River water pending operation of the desalination facilities.[20]

The November 2022 "Prosperity" project formulated under UAE auspices represented the most ambitious proposed expansion: 200 MCM of Israeli desalinated water annually for Jordan in exchange for Jordanian renewable electricity.[25] Jordan's National Carrier project, targeting 300 MCM per year from a facility at Aqaba connected to Amman by a 457-kilometer pipeline at an estimated cost of $2.5 billion, is intended to provide a more independent supply.[25] The December 2013 trilateral memorandum envisaged an Aqaba plant with 80 MCM capacity and a Red Sea–Dead Sea pipeline, with desalinated water divided between Jordan and Israel, the latter for onward sharing with Palestinians.[26]

Researchers whose findings were reported at a 2010 conference proposed that river rehabilitation could be advanced through efficiency measures such as reducing leaks, covering reservoirs, improving household water use, and changing agricultural water management. The report argued that these measures would cost less than desalination and could free water for return to the river.[2] The proposal called for an initial return of approximately 400 MCM annually, with Israel contributing roughly half, followed by contributions from Jordan, Syria, and Palestinians. The absence of contacts with Syria limited the immediate parties to Israel, Jordan, and, to a lesser degree, the Palestinians.[2]

Water allocation and usage in the Jordan basin have generated persistent disputes encompassing competing historical narratives and claims of right. The Arab League's failure to ratify the Johnston Plan in 1955 has been explained differently by different sources: a U.S. diplomatic account attributed it partly to concern that Israeli irrigation of the Negev would encourage Jewish immigration and expansion, while the Arab Higher Committee for Palestine framed the issue as opposition to cooperation with Israel and resistance to Zionist exploitation of regional water sources.[13][5] The role of water competition in the 1967 Six-Day War is also contested. A Washington Institute article argues that the war resulted in part from a Syrian-Lebanese plan to divert Jordan River tributaries, but this is the source's interpretation rather than an uncontested historical consensus.[4]

Implementation of the 1994 treaty has remained a source of friction. In 2012, a Jordanian farmers' union head accused Israel of pumping Jordan River water for settlement agriculture in the West Bank—known by its original, indigenous Jewish name of Judea and Samaria—and returning polluted water, alleging a treaty violation.[31] Israel's Water Authority denied the claims and described its proposed project as removing brackish groundwater to improve water quality, while Jordan's Valley Authority said it would investigate.[31] Reported estimates of the Lower Jordan's discharge differ considerably. A 2013 UN-German commission report cited by Israeli media put annual discharge at between 20 and 200 million cubic meters, while EcoPeace's Israeli director estimated no more than 70 million cubic meters.[7] A 2006 account gave approximately 200 million cubic meters annually reaching the Dead Sea, whereas a 2009 measurement found only 20–30 million cubic meters in the southern Jordan.[1][2]

The attribution of basin withdrawals is similarly disputed. One regional study attributed approximately 46% of withdrawals to Israel, 25% to Syria, and 23% to Jordan, while acknowledging through its figures that the country shares did not fully reconcile with its estimate that 98% of the former flow had been taken.[2] Palestinian water access to the Jordan River remained unresolved in the peace process. The Congressional Research Service reported that political deadlock and violence prevented Israelis and Palestinians from finalizing water-management agreements tentatively reached under Oslo and cited Palestinian demands for a fair share of the river's flow.[29] These claims and positions have not been resolved by any basin-wide agreement covered in the available sources.