‏نمایش پست‌ها با برچسب Dam. نمایش همه پست‌ها
‏نمایش پست‌ها با برچسب Dam. نمایش همه پست‌ها

۱۳۹۲/۰۴/۰۴

Two thirds of Lake Urmia dries up

The lake average depth dropped to 2 from 14 meters
Real Jafarli – APA. The average depth of the lake dropped to 2 from 14 meters, said head of Research Group of Desertification Components Mohammad Darvhish, APA reports quoting Oyannews.
According to him, two thirds of Lake Urmia has turned into saline land: “The area of the lake, when it was full of water, was 540,000 ha, but its area decreased by 360-390 000 ha because of the lack of water supply. For this reason, we can they that two thirds of Lake Urmia has dried up.” 
Darvish said that Binab, Maragha and Ajab Shir cities can be subjected to salt winds due to winds blowing from the east to the west: “These salt winds will damage sown areas, at the same time cane pose a threat to the health of local residents.” 
Head of the Iranian Agriculture Ministry's Department on the Eastern Azerbaijan Province, Masoud Mohhamadian said that water of the wells close to Lake Urmia is salty: “If this situation deteriorates, 204-ha planted areas of 7 towns of the Eastern Azerbaijan province near Lake Urmia can turn into saline soil.”

۱۳۹۲/۰۲/۰۶

Belgian company ready to try to restore Lake Urmia


A Belgian company has announced that it is ready to try to restore Iran’s Lake Urmia, 70 percent of which has dried up over the past few years.
Trackable Engineering Company has put in a request to Iran’s Foreign Ministry in this regard, IRNA reported on Friday. The plan is also being followed up by a member of the Iranian parliament.
The company has estimated the project would cost €1 million and would be completed within three years.
The Belgian company has a track record of restoring the Dead Sea.
Lake Urmia, in the northwest of Iran, is experiencing its worst condition for the past 50 years. The level of the lake’s water has been declining since 1995.
In October 2012, Iranian Environment Protection Organization Director Mohammad Javad Mohammadizadeh said during Iranian calendar year 1390 (March 2011- March 2012), about 2 billion cubic meters of water were transferred to the lake.
Lake Urmia is the third largest salt water lake on earth with a surface area of approximately 5,200 square kilometers.
Experts say the construction of dams on rivers feeding the lake and also droughts have significantly decreased the annual amount of water Lake Urmia receives. They also say that the construction of a bridge across the lake has upset its ecological balance.
source

۱۳۹۲/۰۱/۰۳

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


by Ercan Ayboğa & Akgün Ilhan
Iran has been 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 and its 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.
Introduction
The first dam constructions started in Iran in the 1950s. Before the Islamic Revolution of 1979, only fourteen large dams had been 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, middle and large size 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 dams1 have been completed2. While in 2007 totally large and small 88 dams were under construction in Iran3, this number increased in 2011 up to 135 dams and 546 dams were in the planning phase4. On average, close to two billion m3 of water are added to the country’s water reserves annually. In end of 2011 the storage of dam reservoirs has reached the capacity of 65 billion m3. These figures show that there are plans to impound almost all rivers in Iran which carry regulary water.
Rivers in Iran
The most and the largest rivers in Iran are situated in the north and west. It is so because the highest precipitation occurs here where long and high mountain chains lie parallel to the country’s 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, the south and the east of the country is semi-arid or arid with very low precipitation.
The most well-known and largest rivers in Iran are the Aras and the Karun. The 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 Khuzestan into the Arabian Gulf and has been utilized almost fully. On the Karun River within the Iran are the biggest dams which are built for hydro-energy production, and water is diverted in the lower parts for the irrigation of large areas (280.000 hectares).
On the northern side of the north mountain chain along the Caspian Sea with high precipitation originate many rivers. There are several bigger rivers which spring from the Zagros Mountains on 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 and flow into the Arabian Gulf, such as the Karun River. Some bigger rivers originate from the mountain chains of the north and the west, and flow towards 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 big size rivers flow into the biggest lake of Iran. Some small and middle size rivers are shared in the east with Afghanistan and Pakistan.
The history of water infrastructures in Iran 
As a semi-arid country (except its green coastal areas at the Caspian Sea which does not cover more than 10% of the entire land) Iran, throughout its history, has developed a particular water culture which has been a crucial element in developing human settlements and civilizations. Scarce water resources resulted in specialization in building water infrastructures. With this knowledge, even in semi-desert regions with very limited water resources, towns and cities were built. Among the most representative of these infrastructures were water canals, and, in particular, qanats. Qanats are horizontal water tunnels which bring ground water from mountains to settlements to arid areas at the border. Even though qanats are also found in other countries in the Middle East, the most developed ones are in Iran.
Iran's Dam Policy
The Iranian Ministry for Energy is the responsible body for the management of water resources in the country. Decisions about the construction of water infrastructures, such as dams, are taken within this body. At end of 1980’s the Iranian state started to plan the systematic construction of water infrastructures such as dams, hydro-electric power plants (HEPP) and water diversions. The state planned these water infrastructures entirely based on a technical and profit centred approach without taking into account the issues of cultural and natural heritage, and human settlements. The continuous increase in electricity consumption and the growing need for food and drinking water in the cities were 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 dependent on the central government. There is no public consultation about the government’s policies regarding dam, electricity, irrigation, water supply and development. As governments in Iran are not elected in a truly democratic way and there is no opposition party, the discrepancy between people and governing institutions is huge. This leads to a disconnection between the real needs of people and the actions of the government.
Destruction of the Lake Urmia (Southern Azerbaijan – Iran)
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 has a basin that totals a land of 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 km5. 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 live within a radius of 500 km6. The Lake Urmia in 1985 August (left) and in 2010 August (right)
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 agriculture7. 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 water8. Furthermore, the use of inappropriate irrigation practices drops water use efficiency down to 30%9 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) 10. In beginning of 2012 the lake lost more than 65% of its surface area11. Within the last decade, the maximum depth of the lake fell from 12 to 6 metres12. Another significant negative impact was due to a bridge built over the lake in 2008. This
infrastructure cuts the lake almost in two equal 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 salinity13. 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.
An old ship once upon a time on lake, now on salt concentration
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 Convention14 since 1971 and UNESCO Biosphere Reserve15 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%16.
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 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 existence 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”.
A poster calling for taking action for Urmia - The Lake Urmia calls us and says if you hear: “I am thirsty”
Within years, numerous symbolic protests went on with growing 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 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 the World Environment 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 central 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.
The Dam on the Sheher River which is one of the rivers that feeds 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 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 World 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 many 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 entirely with global climate change 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, limiting irrigation, removing some dams on the rivers that feed the Lake Urmia17 and some projects for taking water from other rivers like the
Zab or Araz Rivers and even the Caspian Sea18 to revive the lake. While the first two proposals make sense, the last proposal is highly discussed among the critics and would result in additional 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 significant19: “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.
End notes:
1 Large dams are defined as being over 15m high. The definition also includes dams between 5 and 15m high with a reservoir exceeding 3 million m3 of volume.
2 See website of Icold – International Commission of Large Dams: http://www.icold-cigb.org/GB/World_register/general_synthesis.asp?IDA=206
3 Iran Daily – Domestic Economy, 23 July 2007.
4 See Ministry of Energy News Agency, 26 October 2011: http://news.moe.org.ir/vdcdzf0s.yt0f56me2y.html
5 UNEP (2012). Thematic Focus: Climate Change, Resource Efficiency, Ecosystem Management, and Environmental Governance. http://na.unep.net/geas/getUNEPPageWithArticleIDScript.php?article_id=79
6 SEDAC (2010). Gridded Population of the World: Future Estimates. Socioeconomic Data and Applications Center (SEDAC) in collaboration with CIESIN, UN-FAO, CIAT.
7 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).
8 Unstructured interviews held with the inhabitants of the town of Sulduz (24-25 May, 2012).
9 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.
10 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). http://lake-urmia.blogspot.com/2010/12/study-of-lake-urmia-level-fluctuations.html (Accessed May 26, 2011)
11 See website of the Lake Urmia Conservation Insitute http://www.saveurmia.com/wp-content/uploads/2012/03/poster_2012.png
12 See website of the Lake Urmia Conservation Insitute http://www.saveurmia.com/wp-content/uploads/2012/03/poster_2012.png
13 The water salinity in the Lake Urmia rose from 220 to 380 mg/lt.
14 See website of the Lake Urmia Conservation Insitute http://www.saveurmia.com/take-action/campaign-statement/
15 See profile at website of Unesco Biosphere Reserve Directory: http://www.unesco.org/mabdb/br/brdir/directory/biores.asp?mode=gen&code=IRA+07 (Accessed May 25, 2011)
16 Reveshty, M. A. & Maruyama, Y. (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). http://lake-urmia.blogspot.com/2010/12/study-of-lake-urmia-level-fluctuations.html (Accessed May 26, 2011)
17Khosravifard, S. (2010): Campaigners Fear Lake Urmia Drying Up. Payvand Iran News. April 30, 2010. http://www.payvand.com/news/10/apr/1297.html (Accessed May 19, 2011)
18Djafarov, T. (2011). "Water transfer of Araz River to Lake Urmia is discussed between Iran and Azerbaijan" Trend News Agency 26 December 2011. at: http://pda.trend.az/en/1973742.html (Accessed February 8, 2012)
19 See website of the Lake Urmia Conservation Insitute http://www.saveurmia.com/2012/06/06/successful-events-on-june-5/

Lake Urmia Basin Location


۱۳۹۱/۰۶/۱۷

Official: 70 percent of Urmia Lake drought op


The head of the Iranian West Azerbaijan Province's Environment Organization said 70 percent of the Urmia (Orumiyeh) Lake has been drought up.
According to ISNA, Hassan Abbasnejad said Iran government started some measures to revive Urmia Lake by cloud seeding, commissioning the new irrigation methods, etc. in last solar year (ended on 18 March 2011) but the process is being carried out slowly.
"The main problem is lack of finance, then now, 300, 000 hectares of lake became salt land," he added.
Abbaszadeh said that Urmia Lake needs 3.1 billion cubic meters of water per year to survive.
Illegal use of water flowing into the lake for watering by rural population, construction of dams and illegal objects on its banks, is also among the problems of the Lake Urmia.
Each litre of water in Lake Urmia contains 330 grams of salt. Previously, the figure stood at 160-170 grams per litre.
Iranian government approved $900 million finance bill to rescue lake from drought, but the process is being carried out slowly.
Source
Urmia is located in the west of the South Azerbaijan(Iran). There is a permanent salt lake, Lake Urmia adjacent to the city. The population of Urmia is predominantly Turks (over 90%), but with Kurdish, Assyrian and Armenian minorities.

۱۳۹۱/۰۵/۲۸

10 new Arch dams to be constructed in the watershed of Urmia Lake


Iran, West Azerbaijan: With the starting of operation of the new dams in the province 1.8 billon meters cubed Water sources will add to our water saves said Seyyed Jala Torabi the local officer to Islamic republic news agency (IRNA).
Torabi also told IRNA that new 10 dams that are constructing have the capacity to save 2.39 billion meter cubed per year. He also mentioned that they have started to study to build another four dams with the capacity of 233 million meter cubed per year.
Torabi mentioned the West Azerbaijan province has the capacity of 10 billion meter cubed water per year that 7.5 of it are surface waters and rest are from underground streams. 3.5 billion meter cubed of this water currently is consuming that 1.7 billion meter cubed of it is from underground resources.
Building another 10 barrages in watershed of Lake Urmia in west Azerbaijan province happens while 63% of the lake already dried up and despite what government officials promised to stop building dams and there is no serious action to prevent this environmental disaster. Mahmoud Ahmadinejad the Iranian president said that he sends an emergency order to stop building new dams but they are still just on the papers and not in the action.  
Global environment and local expert’s emphasis that main reason of the drying up of the lake is the construction many dams without scientific background and increased water diversion for irrigated agriculture within the lake's watershed. They put the blame on wrong environmental policies and mismanagement.
According to the reports of the United Nations environment program (UNEP) the lake has been facing gradually decrease in the level of the water in last 15 years but the government officers try to deny it and even they claim that the water level has been increased.