
AI-generated summary
Istanbul Water and Sewerage Administration (ISKI) regularly measures the water levels of dams in Istanbul and reports them to the public. Increasing temperatures and evaporation cause the water level in dams to decrease.
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 October 4, 2026?
4 OCTOBER 2026 CURRENT DAM FULL RATES
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 data shared by İSKİ, the general average occupancy rate of dams in Istanbul was measured as 39.04 percent in early October.
OCTOBER 4, 2026 DAM FULL RATES
According to İSKİ's latest hydraulic measurements dated October 4, dam-based occupancy rates are as follows:
Ömerli: 55.82 percent
Stenosis: 60.12 percent
Elmalı: 84.85 percent
Terkos: 32.2 percent
Alibey: 36.52 percent
Büyükçekmece: 26.37 percent
Sazlıdere: 20.63 percent
Istrancalar: 19.48 percent
Kazandere: 11.32 percent
Papuçdere: 2.48 percent

The occupancy rate of the dams and ponds that provide Istanbul's water resources was measured as 39.04% in 2026. While the highest rates were 55.82% in Ömerli, 60.12% in Darlık and 84.85% in Elmalı, some dams such as Kazandere and Pabuçdere remained at very low levels. The highest occupancy rate in the last 10 years was recorded as 56.12% in 2017.

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İSKİ shared the current occupancy rates in Istanbul dams as of October 3, 2026. Due to increasing temperature and evaporation, the general occupancy rate decreased to 39.04 percent.