WATER POLITICS

The scenes are rare enough in mid-summer; in early March, they are unprecedented. Lac de Montbel in south-west France is more than 80% empty, the boats of the local sailing club stranded on its desiccated brown banks.

In northern Italy, tourists can walk to the small island of San Biagio, normally reached only by boat, from the shore of Lake Garda, where the water level is 70cm (27in) lower than average. The Alps have had 63% less snow than usual.

In Germany, shallow waters on the Rhine are already disrupting barge traffic, forcing boats heading up into central Europe to load at half capacity, and in Catalonia, now short of water for three years, Barcelona has stopped watering its parks.

After its driest summer in 500 years, much of Europe is in the grip of a winter drought driven by climate breakdown that is prompting growing concern among governments over the water security for homes, farmers and factories across the continent.

A study published in January by Graz University of Technology in Austria, whose scientists used satellite data to analyse groundwater reserves, concluded that Europe has been in drought since 2018 and its water situation was now “very precarious”.

Torsten Mayer-Gürr, one of the researchers, said: “I would never have imagined that water would be a problem here in Europe, especially in Germany or Austria. We are actually getting problems with the water supply here. We have to think about this.”

The World Weather Attribution service said last year northern hemisphere drought was at least 20 times more likely because of human-caused climate change, warning that such extreme periods would become increasingly common with global heating.

Andrea Toreti, a senior scientist at the European Drought Observatory, said: “What is unusual is the recurrence of these events, because we already experienced a severe to extreme drought a year ago, and another one in 2018.

“Clearly, in some parts of Europe, the lack of precipitation and the current deficit is such that it won’t be easy for water levels to recover before the start of the summer,” Toreti told Euronews. Experts have said the coming months will be crucial.

A map of current droughts in Europe from the EU’s Copernicus programme shows alerts for low rainfall or soil moisture in areas of northern and southern Spain, northern Italy and southern Germany, with almost all of France affected.

France recently recorded 32 days without significant rainfall, the longest period since records began in 1959, and the state forecaster Météo-France has said little or no precipitation of note is expected until at least the end of the month.

Simon Mitelberger, a climatologist, said about 75% less rain had fallen across France last month than usual for February, continuing a year-long trend. Nine of the past 12 months had seen rainfall up to 85% below the norm, he told France Info news.

France’s CNRS scientific research centre said that by comparing droughts before 1945 and since 1945 it had established that last summer’s drought was caused by anthropogenic climate change and this winter’s showed “the same characteristics”.

Local authorities in all seven of the country’s major river basins have been ordered to start enforcing water restrictions as the government works on a crisis plan to tackle a shortage that it has said will inevitable lead to “water scarcity problems” this year.

The minister for ecological transition, Christophe Béchu, warned that France would have to cope with up to 40% less water in coming years, adding that the country was already on a “state of alert” and restrictions in some areas were fully justified.

“The situation is more serious than this time last year,” Béchu said. People in four southern départements have been barred from filling swimming pools or washing their cars, while farmers must cut their water consumption by up to half.

Echoing the terms he used to describe the energy crisis sparked by Russia’s invasion of Ukraine, the French president, Emmanuel Macron, called this week for a “sobriety plan” to save water and warned the “time of abundance” had come to an end.

“All of us are going to have to be careful,” he said. Among the government’s plans are modernising agricultural irrigation, which represents up to 80% of consumption in summer, boosting wastewater recycling, and reducing loss due to leakage.

All of Spain has been in drought since January 2022, but water supplies in Catalonia have fallen so low that authorities this week introduced laws including a 40% reduction in water used for agriculture, a 15% reduction for industrial uses, and a cut in the average daily supply per inhabitant from 250 litres to 230 litres.