Saltwater creeps inland as Po River dries in summer heat

The Po River's flow has collapsed under the weight of a scorching European heatwave, and the consequences are reaching far beyond the riverbed. According to Devdiscourse, saltwater intrusion has advanced up to 18 kilometres inland from the Adriatic, a phenomenon driven by the river's drastically reduced discharge. The Guardian reported on Saturday that Italy endured sweltering conditions as temperatures broke records above 40 degrees Celsius across the continent, a weather system that has now exposed the delta's most vulnerable frontier.

For Emilia-Romagna, the saltwater advance poses an immediate threat to agriculture and the protected wetlands that define the Po Delta ecosystem. The region's dairy belt, its fruit and vegetable farms, and its rice paddies—all dependent on freshwater irrigation and soil chemistry—face contamination from saline groundwater seeping into aquifers. The intrusion also jeopardises the Natura 2000 wetland reserves that shelter migratory birds and support the delta's fragile ecology, systems already stressed by decades of subsidence and human pressure.