Iran’s Dam Policy and the Case of the Lake Urmia

Ercan Ayboğa & Akgün Ilhan 
April 2012

Iran is one of the states with the highest rate of dam construction worldwide in the recent years. The construction of hundreds of dams on rivers combined with a non-participative and non-democratic approach has lead to numerous ecological, social, cultural and political problems and conflicts in the past years. There is much public criticism over the intense dam building policy about these impacts. In particular, the case of the Lake Urmia has led to hot debates and many protests within the Iranian society regarding the destructive dams in the country.


The first dam constructions started in Iran in the 1950s. Before the Islamic Revolution in 1979, only fourteen large dams were built, usually with the dominant involvement of foreign banks and companies. After the establishment of the new political system, particularly after the end of the Iran-Iraq war in 1988, the dam building activities have intensified significantly. Today Iran has achieved the capacity to build small and middle large dams without any foreign participation. The objectives of dam building in Iran are mainly the hydroelectricity, irrigation and drinking water supply at which the two latter reasons are less dominant than the first one. Untill now the construction of 541 small and large damsi have been completedii. While in 2007 totally large and small 88 dams were under construction in Iraniii, this number increased in 2011 up to 135 dams and 546 dams were in the planning phaseiv. On average, close to two billion cubic meters of water are added to the country’s water reserves annually. In end of 2011 the storage of dam reservoirs has rached the capacity of 65 billion cubic meters. These figures show that there are plans to impound almost all rivers in Iran which carry regulary water.

Rivers in Iran 

The most and big rivers in Iran are situated in the north and west because the highest precipitation occurs here where are long and high mountain chains parallel to the borders. Almost all emerging rivers flow out of the borders, either to neighbouring countries or to the sea and not into the centre which is a high plain. The centre and (south-)east of the country is mainly half or full desert with a very low precipitation. 

The most known and big rivers in Iran are the Aras and Karun Rivers. Aras comes from Turkey in the very northwest and composes a border river with Azerbaijan for the most stretch. That is why it could not be “used” entirely by the Iranian State. But the Karun River, which is the most effluent (at the end 575 m3/sec, 950 km long) and the only navigable one, flows from the Zagros mountains in the southern province Khuzistan into the Persian Gulf and has been utilized almost fully. On the Karun River are the biggest dams within the Iranian state built for hydro-energy production, and more in the lower parts water is diverted for the irrigation of big areas (280.000 hectares). 

On the northern side of the north mountain chain along the Caspian Sea with high precipitation originate many rivers which have all short lengths. There are several bigger rivers which spring from the Zagros Mountains the west of the state, namely in the provinces Kurdistan, Kermanshah and Elam, and flow towards Iraq where they join the Tigris River. Many rivers are born in the southern part of the Zagros Mountains flow into the Persian Gulf, like the Karun River. Some bigger rivers originate from the mountain chains of the north and west to the arid central plain where they dry out. The second inner basin of Iran is the Lake Urmia basin in the northwest of the country. Several small, middle and some big rivers flow into the biggest lake of Iran. Some less and middle large rivers are shared in the east with Afghanistan and Pakistan. 

Developing of water infrastructures in the history 

As a semi-arid geography (except the green coastal areas at the Caspian Sea which meet not more than 10% of the whole area) the water culture in Iran was throughout the history a crucial aspect in developing human settlements and civilizations. Due to scarce water resources a specialized knowledge in water infrastructures has been developed. With limited water resources areas in half desert regions could be populated. Crucial structures were water canals, but particularly qanats. Qanats are horizontal water tunnels which bring ground water from mountains to settlements at the border to desert areas. There are qanats also in other countries of the Middle East, but the most developed and imposant qanats can be found in Iran.

Iran’s Dam Policy 

In the Iranian state the Ministry for Energy is the responsible body for the management of water resources. Here the decisions are taken about the construction of water infrastructures like dams. In end of 80’ies the Iranian state started to plan the systematic construction of water infrastructures likes dams, hydroelectric power plants and water diversions wherever rivers flow. The state planned these water infrastructures based on a technical and profit approach without to take into consideration cultural and natural heritage and human settlements. The continuous increase in electricity consumption and the growing need for more food and drinking water for cities were some of the strong arguments behind “developing” water resources. 

The plans for the construction of dams are made by the central government, often in cooperation with the provincial governments which are dependant from the central government. There is no any public and free discussion pssoible about the dam policy and the connected electricity, irrigation/agriculture, water supply and development policies. Considering that the governments are not elected in a real democratic way and there is no real critic is possible, the discrepancy between the population and governing institutions has become always bigger. This leads to a big difference in the real needs of the population and the interests of the governments.

Destruction of the Lake Urmia

A growing and diversifying social debate has been going on over the issue of Iran’s dam policy and, in particular, the impacts of dams constructed on the 13 rivers that feed the Lake Urmia. This endorheic lake is situated in the province west Azerbaijan in Northwest Iran. The basin has an area totalling 51.876km2 and covers 3 provinces which are the West, the East Azerbaijan and the Kurdistan provinces. It extends to a length of some 140 km and a width of 85 kmv. The average surface of the lake area used to be 5100 km2. However, now a large portion of it is lost. The Urmia Lake, in its original size, is considered as the largest hyper saline lake in the Middle East. The basin has a population of around 6.4 million people and an estimated 76 million people live within a radius of 500 kmvi.

There are 39 dams either constructed or planned over the rivers flowing into the Lake Urmia, mainly for the purpose of irrigation. As water became more available, many farmers switched from subsistence to intensive agriculture. This shift in agricultural production created increasing pressure on not only surface water, but also underground water resources, over which the Iranian Government has almost no control. 94% of water demand is allocated to agriculturevii. Farmers in Sulduz, a traditional town by the lake, indicate that only a decade ago they could extract water from wells of 30-40 meter deep. Now even at 70 meters deep, they cannot reach any waterviii. Furthermore the use of inappropriate irrigation practices drops water use efficiency down to 30%ix which is very low and results in skyrocketing levels of agricultural water consumption. In addition, droughts since 1990s did not help the situation. However, the first signs of the problem started about four decades ago as the surface of the lake started to decrease. Once a surface of 5278 km2 of lake (1976) shrank to 3108 km2 (2009) x. In beginning of 2012 the lake lost more than 65% of its surface areaxi. Within the last decade, the maximum depth of the lake fell from 12 to 6 metresxii. Another significant negative impact was due to a bridge built over the lake in 2008. This infrastructure cuts the lake almost in two equal two parts and lets no water flow from one to another which is crucial for the functions of the lake ecosystem. As water circulation in the lake is impeded, there has been a dramatic increase in water salinityxiii. In terms of other parameters of water quality, the situation is no better. Due to lack of water treatment facilities and municipal control, the lake is used entirely as the common sink of urban, agricultural and industrial entities around. 

Naturally, these circumstances pose a great danger towards not only humans, but also biodiversity within the Urmia Basin. The basin is the habitat of some 212 species of birds such as flamingo and pelican, 41 reptiles, 7 amphibians and 27 mammals such as the Iranian yellow dear. The lake is also known for its medical effects, especially for curing Rheumatism and Arthritis. Because of many other reasons, as well as these, the Urmia is listed as a wetland of international importance under the Ramsar Conventionxiv since 1971 and UNESCO Biosphere Reservexv since 1976. However, neither of these has yet saved this great natural heritage of humanity from perishing. Recent studies foresee that the shrivelling of the Urmia will continue and that the survival probability within the next ten years is only around 64%xvi.

Greater concerns are at stake for the Middle East 

It is estimated that 8 billion tons of salt is concentrated at the bottom of the Lake Urmia. With wind and storm such amount of salt can be carried away and create serious levels of wind-borne salt toxicity on both directly humans and agricultural production within the radius of 500 km around the lake. Many ecologists, activists and the Iranian officials warn that if the Lake Urmia dries up an ecological catastrophe is inevitable not only for the settlements around the lake, but also in Armenia, Azerbaijan, Iraq and Turkey. The unforeseen consequences of such a large scale ecological disaster might trigger a colossal migration and trigger many conflicts among the states of the Middle East. 

People protesting: “Let’s go to the Lake Urmia and fill it up with our tears” 

Even though the Lake Urmia started to shrivel in the 1970s, it could attract the attention of media only in 1990s. The deterioration of the lake was undeniable. The lake was not only shrinking, but also being heavily contaminated. The survival of many basin communities was at stake. Many had to migrate to large cities such as Tabriz. Some resisted to the increasing impoverishment. It was only in the 2000s when the social problems clustered around the issue of the lake were first pronounced. Guntay, a young Azeri man from Tabriz, indicates that the first time he and his friends brought the issue of Lake Urmia was about ten years ago in an exhibition. “We exposed the photos of dead flamingos in the lake to say that it was dying”. 

Numerous protests went on with larger participation of both the inhabitants of the region and the environmentalists from different parts of Iran. One was in 2009 when people held an interesting symbolic protest which consisted of pouring a bottle of water into the lake that represents their tear drops for what has been happening to their lake. Around 150 people were arrested and some of them were put in prison for years. A year later another large protest action took place in Tabriz on Nature’s Day, at the end of which the Iranian Police arrested some 70 protesters. In another protest in 2011 thousands of people from Tabriz and Urmia were on the streets protesting the Iranian government for not taking the necessary measures to save the lake. This peaceful action was confronted with repression by the Iranian security forces whose result was the death of two protestors and the detention of dozens of citizens. Afterwards, the Iranian State prohibited any news regarding the situation of the Lake Urmia.

Another recent action took place in the Cities of Urmia and Tabriz in May 2012. With a poster, the protesters were asking the President of Iran Mahmoud Ahmadinejad “Is the crisis of Urmia less important than the Nuclear Crisis of Iran?”. The answer to that question was the detention of some hundred protesters some of which are still in prison and some others free at the cost of heavy fines. On the Environment Day, 5th of June 2012 the Iranian Government’s reluctance to take necessary measures to save the Lake Urmia was protested by many all around the world. Baku, Calgary and Waterloo were among the cities where such protests took place. 
After all, the Iranian Government has finally been more open to accepting that there are problems with the Lake Urmia. The Iranian Government’s insistence on explaining the current status of the Lake with only global climate has been coming to an end. Now, a number of solutions are being discussed and formulated within academic and civil society circles. Some these suggest releasing more water from dam reservoirs and thus limiting irrigation, removing some dams on the rivers that feed the Lake Urmiaxvii and some projects for taking water from other rivers like the Zab or Araz Rivers to revive the lake and even the Caspian Seaxviii. While the first two proposals make sense, the last proposal is highly discussed among the critics and would shift water mismanagement problems. However, the words of the head of Iranian State General Inspection Organization Mr. Mohammadi’s after the protests of the World Environment Day in Tabriz are significant: “If the experts in the province believe that a crisis of Lake Urmia is so serious, then we should start from the province itself; province should stop mismanagement of the funds and dedicate some of the budget to solve Lake Urmia’s problem”. He also adds: “The province should not be waiting for the national budget and if there is any crisis they should assign some of the province’s budget for this issue”. The people of the Lake Urmia, once more, seem to be left alone to solve a regional scale problem that would affect many others.


Key notes:

i Large dams are defined as being over 15m high. The definition also includes dams between 5-15m high with a reservoir exceeding 3 million m3.


ii See website of Icold – International Commission of Large Dams:


iii Iran Daily – Domestic Economy, 23rd July 2007.


iv See Ministry of Energy News Agency, 26th October 2011:


v UNEP (2012). Thematic Focus: Climate Change, Resource Efficiency, Ecosystem Management, and Environmental Governance.


vi SEDAC (2010). Gridded Population of the World: Future Estimates. Socioeconomic Data and Applications Center (SEDAC) in collaboration with CIESIN, UN-FAO, CIAT.


vii WWA/Yekom (2005). The Environmental Impact Assessment and study (quality and quantity) of the Development Projects in the Lake Uromiyeh Basin, The West Azerbaijan Water Authority (WWA), Ministry of Energy (MoE).


viii Unstructured interviews held with the inhabitants of the town of Sulduz (May, 2012).


ix Hashemi, M. (2008) An Independent Review: The Status of Water Resources in the Lake Uromiyeh Basin. A Synthesis Report for the GEF/UNDP Conservation of Iranian Wetlands Project, School of Civil Engineering and Geosciences, Newcastle University, England, UK.


x Reveshty, Mohsen Ahadnejad; Maruyama, Yoshihisa (2010): Study of Lake Urmia Level Fluctuations. Study of Lake Urmia Level Fluctuations and Predict Probable Changes using Multi-Temporal Satellite Images and Ground Truth Data Period (1976-2010). (accessed May 26, 2011)


xi Lake Urmia Conservation Insitute


xii Lake Urmia Conservation Insitute


xiii The water salinity in the lake Urmia rose from 220 to 380 mg/lt.


xiv Lake Urmia Conservation Insitute


xv See profilie at website of Unesco Biosphere Reserve Directory: (accessed May 25, 2011)


xvi Reveshty, Mohsen Ahadnejad; Maruyama, Yoshihisa (2010): Study of Lake Urmia Level Fluctuations. Study of Lake Urmia Level Fluctuations and Predict Probable Changes using Multi-Temporal Satellite Images and Ground Truth Data Period (1976-2010). (accessed May 26, 2011)


xvii Khosravifard, Sam (2010): Campaigners Fear Lake Urmia Drying Up. Payvand Iran News. April 30, 2010. (Accessed May 19, 2011)



xviii Djafarov, T. (2011). ”Water transfer of Araz River to Lake Urmia is discussed between Iran and Azerbaijan” Trend News Agency 26 December 2011. Accessed February 8, 2012 at:



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