Reservoir levels for Istanbul’s drinking water supply rise following recent rainfall, according to data from the Istanbul Water and Sewage Administration (İSKİ), as reported by Turkish outlets. One report says the average occupancy rate of dams supplying drinking water to the city increases to 70.05%, citing updated İSKİ figures after rain. Another report describes a separate update in which average reservoir levels reach 58.03% after rainfall. The differing percentages reflect changes between reporting times and potentially across specific measurement windows or reservoir sets within the broader system. Both accounts indicate that the city’s water reservoirs remain a monitored resource and that system conditions are affected by rainfall patterns. The updates come as Istanbul continues to manage ongoing pressure on its water supply infrastructure and demand, with dam occupancy tracked as a key indicator of available capacity. The reports rely on İSKİ’s published data and present the rainfall-driven improvement as an increase in stored water levels, even as the system remains under strain.