Journal
WATER RESOURCES MANAGEMENT
Volume 26, Issue 1, Pages 129-145Publisher
SPRINGER
DOI: 10.1007/s11269-011-9909-8
Keywords
System dynamics; Simulation; Integrated lake management; Surface water overuse; Climate change
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Urmia Lake in Iran is the second largest saline lake in the world. This ecosystem is the home for different species. Due to various socio-economical and ecological criteria, Urmia Lake has important role in the Northwestern part of the country but it has faced many problems in recent years. Because of droughts, overuse of surface water resources and dam constructions, water level has decreased in such a way that one quarter of the lake has changed to saline area in the last 10 years. The purpose of this research is to determine the main factors which reduce the lake's water level. To this end, a simulation model, based on system dynamics method, is developed for the Urmia Lake basin to estimate the lake's level. After successful verification of the model, results show that (among the proposed factors) changes in inflows due to the climate change and overuse of surface water resources is the main factor for 65% of the effect, constructing four dams is responsible for 25% of the problem, and less precipitation on lake has 10% effect on decreasing the lake's level in the recent years. In the future, the model also can be used by managers as a decision support system to find the effects of building new dams or other infrastructures.
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