İSKİ announced: 14 October 2026 Istanbul dam occupancy rates have been announced! How much water remains in the dams in Istanbul?

Although it is the middle of the autumn season in Istanbul, the expected seasonal rains have not yet fallen into the basins, causing the city's water resources to decline to critical levels.

14 OCTOBER DAM FULL RATE

The water level in the dams that meet the daily water needs of millions of citizens in Istanbul continues to decline due to high evaporation in the summer months and lack of rainfall in the first half of autumn. According to the current official hydraulic reports published by İSKİ (Istanbul Water and Sewerage Administration), the city's general average dam occupancy rate was recorded as 38.6 percent as of October 14, 2026. The gradual melting of the main water reserves, which were more than half full at the beginning of the summer, once again increased the importance of water awareness and saving steps in the megacity.

14 OCTOBER UPDATED DATA: HOW MUCH WATER IS IN EACH DAM?

Elmalı Dam: 81.28 percent

Darlık Dam: 59.95 percent

Ömerli Dam: 54.45 percent

Alibey Dam: 33.32 percent

Terkos Dam: 30.14 percent

Büyükçekmece Dam: 25.39 percent

Sazlıdere Dam: 19.92 percent

Istrancalar Dam: 19.02 percent

Kazandere Dam: 7.04 percent

Pabuçdere Dam: 2.55 percent