‘Very precarious’: Europe faces growing water crisis as winter drought worsens

Multiple governments warn of critical water shortages as heatwaves and lack of rain leave river systems depleted

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.