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Istanbul Water and Sewerage Administration (ISKİ) regularly measures the water levels of dams in Istanbul and reports them to the public. Water levels tend to decrease due to increasing temperatures and evaporation.
In its updated statement, Istanbul Water and Sewerage Administration (ISKI) shared the recent change in dam occupancy rates in Istanbul. So, what is the occupancy rate of Istanbul dam on September 23, 2026?
CURRENT DAM OCCUPANCY RATES 23 SEPTEMBER 2026
The water level in the dams that meet the daily water needs of millions of citizens in Istanbul continues its downward trend due to the effect of increasing temperatures and evaporation. According to the current official data shared by İSKİ (Istanbul Water and Sewerage Administration), the general average dam occupancy rate was measured as 38.32 percent in mid-September. On September 23, 2026, the dam occupancy rate in Istanbul was measured as 36.94 percent.
23 SEPTEMBER 2026 DAM FULL RATES
According to İSKİ's latest hydraulic measurements dated September 23, dam-based occupancy rates are as follows:
Elmalı Dam: 64.79 percent
Darlık Dam: 56.96 percent
Ömerli Dam: 50.18 percent
Alibey Dam: 33.88 percent
Terkos Dam: 32.8 percent
Büyükçekmece Dam: 26.87 percent
Sazlıdere Dam: 21.2 percent
Istrancalar Dam: 19.82 percent
Kazandere Dam: 12.31 percent
Pabuçdere Dam: 3.46 percent
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