A new question for Istanbul smiling in the rain: Will the dam overflow?

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The recent heavy snowfall has significantly increased the occupancy of dams that supply Istanbul. However, due to this increase, some dams have reached their maximum capacity.Even when this is the case ‘flood’ The possibility was raised. For the past few days, 0054SK0054 has called for “countermeasures” against possible floods in streams and dam basins.

Now, water is very important to Istanbul, but is there a risk of dam overflowing? Dursun Yıldız, former director of the State Hydropower Business Administration and head of the Water Policy Association, answered the question at Hürriyet.com.tr.

Dursun Yildiz; He said the potential for floods can be minimized by controlled discharge of water from dams with increasing fullness. “The warning points out that water in some places has reached the highest levels of the dam lake and there is no mechanism to prevent this.” Said.

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Here is a dangerous area

Yıldız said floods could occur as a result of the sudden and uncontrollable discharge of dam lake water to the riverbed. “Riva stream by Ömerli dam, Şile Pot stream by Darlık dam, Alibeyköy stream by Alibeyköy dam, Göksu stream by Elmalı dam” He categorized and explained dangerous areas.

When will the risk be mitigated?

Dursun Yıldız reminded us that water needs to be managed in a way that does not harm or minimizes harm to living organisms, and that necessary precautions need to be determined in advance.

Star, ‘‘The amount of water entering the dam lake in Istanbul during heavy rains is measured by measurement. As the dam’s water level continues to rise, either slowly open the dam’s cover or use a flood system called the Lower Flood Bypass to release some of this water into the riverbed downstream of the dam in a controlled manner. .. In this case, the dam will not overflow. Continued to say:

-However, the warning states that some dams will overflow. To prevent this, there are drainage structures such as drainage channels and drainage channels inside the dam. We use these to manage the floods that flow into the dam lake. Floods flowing into the dam lake can be emptied as planned to prevent wasting water. This is called flood routing work.

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-Operations in the reservoir are aimed at maintaining the excess water that enters the reservoir in a safe way without losing the extra water that poses no danger. Unretainable amounts of water are released into the riverbed. Water that is discharged unnecessarily without conducting an operational survey can be regarded as wasted water. However, water released from some locations, such as the Kazandele Dam and the five dams in the Istranja Mountains, has the opportunity to be released from the riverbed into the sea. In this case, the risk of flooding is reduced.

Did the dam overflow occur before?

Explaining that the average occupancy of dams in Istanbul can be higher than it is today and that water can be released, Yıldız said,”However, no events such as overflow have occurred.” Said.

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The current general occupancy of dams in Istanbul is higher than last year, with a occupancy of 89% as of March 24. So how do you need to interpret this? Can we say that Istanbul will not suffer from water shortages, including next summer?

Yıldız said the average occupancy rate was 93% in 2012 and 95% in 2015. “But in today’s situation, we can see that some dams are completely filled. It is expected that rain and snow will melt in the dams, and it is estimated that more water will come to these dams. This situation increases the risk of flooding, “he said.

According to Yıldız; at these rates, Istanbul will not experience water scarcity this year.

The energy costs of water services in Istanbul are high. For this reason, it is necessary to decide which dam reservoir to use first in order to save energy. Efforts should be made to drain water from other dams in a controlled manner without damaging the riverbed.

Dursun Yildiz

Megacity’s population was based on 20 million. Experts want to save water on every occasion, but Istanbul’s population is growing.

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Yıldız said that existing water resources cannot support Istanbul with a population of 25 to 30 million. “From today onwards, the supply of water to Istanbul needs to adopt a socialist and realistic water demand management approach. Starting from the pilot area, the use of treated wastewater and stormwater harvesting needs to be expanded. It is necessary to establish in advance the technical infrastructure and human resources necessary for smart water management in the smart city concept. He made a suggestion.

What I am worried about is that it is very difficult to manage the pressure and uncertainty caused by climate change unless water management is ready today. The link between water management and energy, food and the environment is increasing. Confusion causes problems in many areas of life. This causes a deterioration in social, economic and ecological balance.

Dursun Yildiz

Pressures such as climate change and pollution of water resources are increasing day by day, Yıldız continued.

-First, water is a right to life and you need to provide water as a public service. However, it is becoming increasingly difficult to practice and perpetuate this principle. The most correct policy in water management is to ensure a balance between economic, ecological and social goals. However, this is often not possible and compromises are made from these goals.

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-Long-term plans deviate due to socio-political influences and populist policies. Second, uneconomical and ecological solutions are forced to upset the balance. Water is in constant demand and is a very important resource. Nothing can be substituted and must be provided cleanly and continuously under all circumstances. This forces the government to take emergency measures if the problem begins to deviate from the plan and is out of balance.

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