The First Drinking Water Dam in Istanbul was Put into Service in 1883

The first drinking water bar in Istanbul was put into service.
The first drinking water bar in Istanbul was put into service.

📩 11/02/2021 10:52

Dams have a big share in meeting drinking water in Istanbul. The first dam in Istanbul was put into service in 1883 in order to meet the drinking water needs of the increasing population and the lack of underground resources. This breakthrough, which started with the Terkos Dam, was followed by the Elmalı 1893 and Elmalı 1950 Dams, which were built between 1 and 2.

all together to Istanbul, Turkey, from 2020 until the beginning of 2021 spent a season drought. Throughout the country, it was snow and rainfall that pleased everyone as of late January and early February. Dams, which gave a thirst alarm in Istanbul, increased their occupancy rate to 45 percent with the last rainfall. According to ISKI data, the increase in the reservoirs with the effect of these precipitation was recorded as 24.29 percent.


The occupancy rate of dams that supply Istanbul's drinking water is of vital importance. With the increasing population and the decrease in underground resources over time, dams have played a big role. The first dam, which provided drinking water to Istanbul in this sense, was put into service about 138 years ago. Terkos Dam, which was put into service in 1883, has a historical importance as it is the first known modern dam in Istanbul.

Terkos Dam, which was put into service on the European side, was followed by Elmalı 1893 and Elmalı 1950 Dams, which were put into service in Beykoz between 1 and 2.


Terkos on the European side and Elmalı 1 and Elmalı 2 dams on the Anatolian side made significant contributions to meeting the drinking water of Istanbul when they were built. The capacities of these dams in that period started to be insufficient for the city over time.

Long after the Elmalı 2 Dam was put into service in 1950, two more dams began to serve Istanbul. Ömerli and Alibeyköy Dams took their place in the history of the city in 1972 as dams contributing to the drinking water of Istanbul. The 1883 dams that were brought to Istanbul between 1972 and 4 in the city today in total; It meets the need for 413 million cubic meters of drinking water.


With the immigration of Istanbul after the 1970s, the water of Istanbul started to be insufficient. The drinking water dams in the city; Darlık Dam with its current water retention rate of 94 million cubic meters and Büyükçekmece dams of 100 million cubic meters were included in 1989.


The adventure of Istanbul's drinking water dam construction, which started in 1883, continued with the construction of regulators until 2014. The first regulator in Istanbul was put into service in 1992 under the name of Yeşilvadi Regulator. Yeşilçay, built in 2004, Melen 2007 and Melen 2014 regulators built between 1 and 2 provided 720 million cubic meters of resource to the city's drinking water in one year.

Built between 1995 and 1997; With the dams of Düzdere, Kuzuludere Büyükdere, Sultanbahçedere, Elmalıdere, Kazandere and the Sazlıdere Dam built in 1998, 230 million cubic meters of contribution was made to the drinking water capacity of Istanbul. Şile Caisson Wells with an annual yield of 30 million cubic meters were put into service in 1996. Papuçdere Dam started to supply water to Istanbul in 2000 with a capacity of 60 million cubic meters.


Ömerli Drinking Water Treatment Plant serves as the largest water treatment facility in Istanbul. The current capacity of the facility, which provides drinking water to the entire Anatolian side and some of the European side, is 1 million 550 thousand cubic meters. With the Emirli 2 Treatment Plant that is being built inside and planned to be completed in June, the daily capacity will increase by another 500 thousand cubic meters. With this increase, daily capacity of Ömerli will reach 2 million 50 thousand cubic meters.

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