Lake Urmia is in danger
The lake is between the provinces of East Azerbaijan and West Azerbaijan, west of the southern portion of the similarly shaped Caspian Sea. It is the largest lake in the Middle East[3], and the third largest salt water lake on earth, with a surface area of approximately 5,200 km² (2,000 mile²), 140 km (87 miles) length, 55 km (34 miles) width, and 16 m (52 ft) depth.
Ecology
The Orumieh Lake, which lies in the northwestern Iran, is home to some 212 species of birds, 41 reptiles, 7 amphibians, and 27 species of mammals, including the Iranian yellow deer.
The construction of a dam on part of the lake and the recent draught has significantly decreased the annual amount of water Orumieh receives. This in turn has increased the salinity of Orumiyeh's water, causing the lake to lose its significance as home to thousands of migratory birds, such as flamingoes.
The lake is marked by more than a hundred small rocky islands, which are stopover points in the migrations of various kinds of wild bird life (including flamingos, pelicans, spoonbills, ibises, storks, shelducks, avocets, stilts, and gulls).
By virtue of its high levels of salinity, the lake does not sustain any fish species. Nonetheless, Lake Urmia is considered to be one of the largest natural habitats of Artemia, which serve as food source for the migratory birds such flamingos. Most of the area of the lake is considered a national park.
The lake is a major barrier between two of the most important cities in West Azerbaijan and East Azerbaijan provinces, Urmia and Tabriz. A project to build a highway across the lake was initiated in the 1970s but was abandoned after the Iranian Revolution of 1979, having finished a 15 km causeway with an unbridged gap. The project was revived in the early 2000s, and was completed in November 2008 with the opening of a 1.5 km bridge across the remaining gap[5]. However, the high saline environment is already heavily rusting the steel on the bridge despite anti-corrosion treatment. Experts have warned that the construction of the bridge, together with a series of ecological factors, will eventually lead to the drying up of the lake, turning it into a salt marsh which will directly affect the climate of the region.
Lake Urmia has been shrinking for a long time, with an annual evaporation rate of 0.6m to 1m (24 to 39 inches). The lake's salts are considered to have medical effects, especially as a cure for rheumatism.
Lake Urmia is a UNESCO Biosphere Reserve and a Ramsar site.
reference: wikipedia
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