Europe's rivers fall to near-historic lows, threatening economy and power
Europe's major rivers are running at water levels normally seen much later in the summer, with prolonged heat and drought putting growing pressure on transport, energy and agriculture.
The Rhine, Danube and Po have fallen to near-historic lows as unusually warm weather accelerated Alpine snowmelt and reduced water reserves for later in the season.
Satellite images released by the EU's Copernicus program in early August showed large sandbanks and gravel bars emerging along sections of the Loire, Rhine, Danube and Po.
The European Drought Observatory said severe drought conditions persisted across much of Europe in July, particularly in central and western areas.
Rhine shipping hit by low water
The Rhine, a vital freight route linking Europe's industrial heartland with the North Sea, is under severe pressure.
Germany's monitoring system reported that 44% of Rhine stations recorded extremely low water levels at the end of July. At Kaub, a key navigation point, navigable depth fell to around 25 centimeters.
Ships are still operating but carrying much smaller loads, forcing companies to use additional barges or shift freight to road and rail. The disruption is raising transportation costs and threatening industrial supply chains.
Danube puts power generation under pressure
Low water levels on the Danube are also affecting electricity production.
Hungary's Paks Nuclear Power Plant has reduced output because declining river levels have limited cooling capacity. The plant produces more than 40% of Hungary's electricity.
Romania is also facing concerns over cooling water supplies at the Cernavoda nuclear plant, while Serbia is seeing reduced hydropower output and difficulties cooling coal-fired power stations.
Po drought threatens Italian agriculture
Italy's Po River is facing severe drought, putting pressure on the country's agricultural heartland.
Rice fields in northern Italy are experiencing water shortages, while reduced river flows are allowing seawater to move farther inland, increasing salinity and reducing freshwater available for irrigation.
More than 100 municipalities in northern Italy are also experiencing difficulties maintaining drinking-water supplies.
French nuclear fleet affected by extreme heat
France's nuclear reactors rely heavily on rivers for cooling. During extreme heat, environmental restrictions on the discharge of warm water can force plants to reduce output.
Lower nuclear generation can put additional pressure on interconnected European electricity markets and contribute to higher wholesale prices.
Heat and early snowmelt worsen drought
Scientists say the unusually low river levels reflect more than reduced rainfall.
A warmer spring caused Alpine snow to melt earlier, leaving less water for the summer. Rising temperatures are also increasing evaporation from rivers, reservoirs and soils while driving higher water demand from agriculture, households and industry.
If hot and dry conditions persist through August, Europe could face increasingly serious disruptions to transport, energy production, farming and industrial supply chains.
