Drought threatens Italy's agricultural heartland as rivers run dry

The Po River, which waters Italy's most productive agricultural belt in the north, is running dry as a record-breaking heatwave grips the continent. According to reports from the field, seawater is now intruding into the freshwater system—a sign of severe hydrological stress that occurs when river flows drop below the point where tidal salt can push upstream. The phenomenon compounds the immediate heat stress on crops and livestock already struggling under temperatures that have broken records across Germany, France and the UK this week.

The threat is not abstract. Parmesan cheese production, one of Italy's most valuable agricultural exports, depends on milk from dairy herds in the Po Valley. When irrigation water becomes scarce or contaminated by salt, the entire supply chain falters. Farmers across the region are reporting acute water shortages, and the economic ripple extends beyond cheese to wheat, rice, maize and other staple crops that feed both Italy and the broader European market.

Italy's economy grew just 0.69 per cent in 2024, a figure already constrained by structural headwinds including an ageing population and emigration of working-age citizens. Agricultural output, though a smaller share of GDP than in past decades, remains a cornerstone of rural employment and export revenue. A sustained drought threatens to deepen regional inequality—the North–South divide that international observers have long identified as a structural weakness in the Italian economy.

The heatwave itself is being attributed by climate scientists to human-caused climate change, which has made such extreme weather events more frequent and intense. The World Bank and other international institutions have flagged climate stress as a growing economic risk for Mediterranean economies. Italy, with its long coastline, tourism-dependent regions and water-intensive agriculture, is particularly exposed.

The immediate economic cost is difficult to quantify without official harvest data, but the pattern is clear: extreme heat reduces productivity, raises input costs (emergency irrigation, crop protection), and can destroy yields entirely. For an economy already burdened by a public debt of 77.3 per cent of GDP and modest growth, such supply shocks add inflationary pressure and reduce tax revenues from affected sectors. The euro weakened slightly against the dollar over the past month, trading at 1.1401 on 26 June, a shift that makes imports more expensive for Italian firms already managing thin margins.