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The occupation rate of the Istanbul dams is at a critical level due to the lack of rainfall in the autumn and winter months. According to ISKI data, the Istanbul dams’ occupancy rate, which was 20.02 percent yesterday, has dropped to 19.91 today. In other words, 80 percent of Istanbul’s drinking water resources are empty. The waters drawn from the Sazlıdere dam were also seen from the air.
Member of the academic staff of the Department of Meteorological Engineering of Istanbul Technical University (ITU) Prof. Dr. In drawing attention to the two new waves of rain coming next week, Hüseyin Toros said: “But of course, to As the consistency of the forecast of the meteorological models increases, the margin of error is high. We need to study the water resources we have as if the water in our dams is running out or tomorrow it will run out. “We need to keep working quickly to see how we can use water efficiently at our own scale.”
CRACKED SOILS IN SAZLIDERE AND SURROUNDINGS
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Sazlıdere is one of the most critical dams in Istanbul. After the waters drained from the Sazlıdere Dam, cracked soils and tree trunks emerged. The birds were also seen looking for food in the prey, which was without water.
SAVING WATER HAS BEEN EFFECTIVE
Member of the academic staff of the Department of Meteorological Engineering of Istanbul Technical University (ITU) Prof. Dr. Hüseyin Toros said: “Some of the waters of Istanbul come from the ISKI dams, and some of them come from the Melen Stream. or Yeşilçay, Istranca. When we look at the previous months except December during the last year 2020, we see that 477 million cubic meters of water comes from outside of Istanbul. And when we look at the values in December, we got partial rain, although it didn’t get the rain it should have in December. This rain had a serious impact on the Istanbul dams. According to my calculations approximately, we saved 30 million cubic meters of water and the water consumption decreased. The reasons are that evaporation is decreasing, even if it rains little. Our need for water decreases as the weather is cold or wet. This already has an effect on reducing water in dams. Also, in fact, the water saving studies that started in November were carried out in many publications. When we look at the water consumption in 2019 and 2020 in the summer period, it was high in 2020. When we look at these values in November, we see that the water consumption in November 2020 is less than the water consumption in November last year. . Here we also see that such publications are extremely effective, ”he said.
“ESTIMATED CONSISTENCY OF WEATHER MODELS HIGHER SHARES AS WEATHER INCREASES”
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Prof. Dr. Toros spoke about the image of the future as follows:
“Yesterday it rained, we entered the year 2021 with rain actually. Of course this has an effect, it has a positive effect on dams. For example, while the daily water consumption in Istanbul dams is 24 per thousand, when we look at it today, I see that it is 11 per thousand. Even if it is a light rain, we see that it has had a positive effect directly on the dams since the soil is saturated with water, even if it is a light rain since evaporation is less in the following period. Again, when we look at the weather forecasts, a new system will arrive Monday through Tuesday. It will have an effect. Then we see a new system coming on Friday, this system seems to leave a really nice shower according to some model results. Next week, the precipitation appears to be based on the model results. I hope we get the expected rain in January 2021. If we get the expected rain, the water level in the dams will start to rise rapidly. When we look at the changes of average annual precipitation in Istanbul over many years, 13% of the annual precipitation in January, 11 in February, 9% in March, 7 in April, 5 in May and June ‘on July 4 and 3, that is, 51 percent of the precipitation in Istanbul falls during the next 7 months. Even in the case of almost normal rains and now that the inhabitants of Istanbul are paying attention to saving water, I guess we will go through a positive process without experiencing water shortages in Istanbul in the next period. But of course, as forecast consistency from weather models increases, the margin of error is high. We need to study the water resources we have as if the water in our dams is running out or tomorrow it will run out. We need to keep working quickly on how to use water economically in our own way. Because even if the amount of precipitation that should fall in January has fallen twice, there is no downside to saving water that we will do, even if the water in the dams is too much. Because we are talking about a global climate change. We are talking about the water scarcity increasing even more in the next year, we are talking about the rapid warming of our world. We can reduce the negative effects by gradually adapting to this climate change on our own. “
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