What are the biggest environmental concerns about the Istanbul Canal?
Posted on Mar 01, 2026 / Travel
Many environmental experts and local activists are worried about how the Istanbul Canal could impact nature and resources. One major concern is that digging such a big waterway will change water flow, salinity, and ecosystems in the Sea of Marmara and nearby lakes, which could hurt marine life and water quality. Critics also warn that the project could damage forests, agricultural lands, and habitats as the canal cuts through large areas of land. Another fear is that it might contaminate groundwater and disrupt natural water sources used by people who live around Istanbul, potentially affecting drinking water or farming. Some say the huge amount of soil excavation — billions of cubic meters — creates dust, noise, and risk of pollution during construction. Groups also worry that new urban sprawl and housing around the canal could increase the city’s earthquake risk and strain local infrastructure. Environmental reviews and watchdog reports point out that these issues need serious study before the project moves ahead.
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