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Istanbul Water and Sewerage Administration (ISKİ) regularly measures the water levels of dams in Istanbul and announces them to the public. This data is critical for water supply planning in the city.
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 1, 2026?
CURRENT DAM FULL RATES OCTOBER 1, 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 October 1, 2026, the dam occupancy rate in Istanbul was measured as 38.42 percent.
1 OCTOBER 2026 DAM FULL RATES
According to İSKİ's latest hydraulic measurements dated October 1, dam-based occupancy rates are as follows:
Ömerli: 48.94 percent
Stenosis: 54.42 percent
Elmalı: 65.17 percent
Terkos: 32.5 percent
Alibey: 33.25 percent
Büyükçekmece: 26.37 percent
Sazlıdere: 20.63 percent
Istrancalar: 22.35 percent
Kazandere: 11.93 percent
Papuçdere: 2.93 percent

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