Büyükçekmece Dam was built to supply residential water to Istanbul. The construction started in 1983, and the dam was completed in 1988.[1] Water supply from the dam's reservoir went into service in 1989.[2] It is located in Büyükçekmece district on the European part of Istanbul on the Lake Büyükçekmece,[1] which is formed by disconnecting the stream Sarısu's outflow to the Marmara Sea.[2] It is an earth-fill embarkment dam of 13 m (43 ft) height.[1] The dam's catchment area is 620 km2 (240 sq mi).[2] The reservoir has a capacity of 162 hm3 (5.7×109 cu ft) covering a surface of 43 km2 (17 sq mi) at normal pool.[1] The reservoir water is sanitated before it is supplied to the households. Annual water supply capacity of the dam is 100,000,000 m3 (3.5×109 cu ft).[2]
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