World Rivers Face Historic Droughts and Depleted Water Reserves in 2025
A UN World Meteorological Organization report reveals that 2025 was one of the driest years for global rivers in over three decades, driven by severe climate change and water storage depletion.
The world's rivers experienced one of their driest years in over three decades in 2025, according to a comprehensive study by the United Nations World Meteorological Organization (WMO). The findings reveal an alarming picture of global water resources, highlighting a dramatic depletion of the Earth's natural water reserves.
Depleting Global Water Reserves
The assessment of the global water cycle indicates a severe decline in terrestrial water storage, which includes groundwater, lakes, rivers, snow, ice, and soil moisture. Last year, these reserves stood at 42% below the global average. Climate change impacts are driving erratic weather patterns, shifting rivers between extreme drought and fatal flash floods. In 2025, only about one-third of the world's rivers flowed at normal rates.
"We are draining our savings account," warned WMO Secretary-General Celeste Saulo. "Global terrestrial water storage has shown a downward trend since 2014-2016 – a consistent signal that has now lasted for a decade."
Furthermore, glaciers worldwide lost mass for the fourth consecutive year, shedding 400 gigatons of ice in 2025 alone and raising global sea levels by 1.1 millimeters.
Economic and Ecological Fallout
The degradation of river systems carries devastating consequences for the global economy and human livelihood. Low water levels on the Danube River recently triggered an unprecedented energy crisis in Hungary and Romania, forcing the shutdown of nearly all nuclear reactors due to insufficient cooling water. Meanwhile, the Mississippi River in the US faces chemical pollution and severe droughts, and none of England's rivers currently maintain good ecological and chemical health.
"We must redouble our efforts to better understand the world's water resources," concluded Wine Jenkinson, Director of Hydrology at the WMO. "This requires increased data collection and sharing to protect human lives and well-being."
