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3 clusters · 7 sources · 18 days · First seen · Last updated

Istanbul water reservoir depletion

Overview

In late July 2026, the Istanbul Water and Sewerage Administration (İSKİ) reported a rapid decline in the city’s reservoir water levels due to soaring temperatures, low rainfall, and high consumption. During this period, the average fill rate of Istanbul’s ten reservoirs dropped from below 60% to approximately 55.49%, with specific reservoirs like Pabuçdere recording levels as low as 25.19%.

By mid-August 2026, the average water level in Istanbul's dams had fallen below the 50% threshold, dropping to approximately 49.54%. While some reservoirs such as Elmalı (over 80%) and Ömerli (71.05%) maintained higher levels, several western basin reservoirs reached critical lows. Specifically, Pabuçdere recorded occupancy at approximately 16%, while Kazandere and Sazlıdere also showed significantly depleted levels.

Experts, including Prof. Dr. Hüseyin Toros from Istanbul Technical University, noted that these levels represent one of the three lowest periods in the last decade. The city faces ongoing pressure from daily water usage that is approaching 3.5 million cubic meters, exacerbated by rising temperatures and high evaporation rates.

Entities

Istanbul · Istanbul Water and Sewerage Administration · Istanbul Water and Sewerage Administration (İSKİ) · Istanbul Technical University · Pabuçdere Dam

Timeline

  1. 5 days ago

    [INTERNATIONAL] 3 sources
    Istanbul dam levels fall below 50 percent threshold

    Istanbul's dam occupancy rates have dropped below the critical 50 percent threshold due to summer heat, low rainfall, and high consumption, with some reservoirs reaching as low as 16 percent.

  2. 7 days ago

    [INTERNATIONAL] 4 sources
    Istanbul dam occupancy rates fall below 50%

    Istanbul's dam occupancy rates have dropped to approximately 49.94% due to low rainfall and high summer consumption, marking one of the lowest levels in the last decade.

  3. 23 days ago

    [POLITICS] 7 sources
    Istanbul Reservoir Levels Drop Below 60% Amid Heat Wave

    İSKİ says Istanbul’s reservoirs fell to an average 55.5% by July 29 2026, with the lowest at 25.2% amid heat and drought.

Sources

anlatilaninotesi.com.tr · cumhuriyet.com.tr · dikgazete.com · gazetedamga.com.tr · gazeteport.com.tr · haber3.com · independentturkish.com

This summary has been updated 1 time: see revision history