Europe’s rivers run dry as scientists warn drought could be worst in 500 years

Crops, power plants, barge traffic, industry and fish populations devastated by parched waterways

In places, the Loire can now be crossed on foot; France's longest river has never flowed so slowly. The Rhine is fast becoming impassable to barge traffic. In Italy, the Po is 2 metres lower than normal, crippling crops. Serbia is dredging the Danube.

Across Europe, drought is reducing once-mighty rivers to trickles, with potentially dramatic consequences for industry, freight, energy and food production - just as supply shortages and price rises due to Russia's invasion of Ukraine bite.