
According to İSKİ's hydraulic report dated November 9, 2026, the general average occupancy rate of Istanbul's ten main dams was recorded as 61.91 percent.
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With the increase in autumn rainfall in Istanbul, water reserves in dams gained positive momentum. İSKİ shared the updated hydraulic report on November 9, 2026 and announced the occupancy rates of ten main dams.
The situation in water reserves, which concerns millions of citizens in Istanbul, gained positive momentum with the reflection of autumn rains on the basins. After the heavy rain in Istanbul for days, the occupancy rate in the dams became a matter of curiosity. İSKİ announced the dam occupancy rate on 9 November 2026.
9 NOVEMBER 2026 DAM FULL RATE
The situation in water reserves, which concerns millions of citizens in Istanbul, gained positive momentum with the reflection of autumn rains on the basins. According to the updated hydraulic reports dated November 9, 2026 shared by Istanbul Water and Sewerage Administration (ISKİ), the general average occupancy rate of the ten main dams that meet the city's water needs was recorded as 61.91 percent.
FULL RATE OF ISTANBUL DAMS
According to İSKİ's hydraulic measurements dated November 9, 2026, dam-based occupancy rates are as follows:
Ömerli Dam: 82.95%
Darlık Dam: 94.63%
Elmalı Dam: 69.1%
Terkos Dam: 51.81%
Alibey Dam: 79.58%
Büyükçekmece Dam: 41.18%
Sazlıdere Dam: 42.85%
Istrancalar Dam: 84.65%
Kazandere Dam: 12.27%
Pabuçdere Dam: 7.83%

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