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Local residents rescue an elderly woman (C) from the rising flood waters in the Romanian village of Slobozia Conachi on September 14 2024.
"As a result of rising temperatures, the hydrological cycle has accelerated. It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water," the WMO lead said.
The climate crisis is destabilizing the world's water cycle, depriving millions of people of the freshwater resources they need while inundating others with deadly and catastrophic floods.
That's the picture painted by the World Meteorological Organization (WMO)'s third-ever State of Global Water Resources report, released on Monday, which found that 2023 was the driest year for the world's rivers in more than three decades.
"Water is the canary in the coalmine of climate change," WMO Secretary-General Celeste Saulo said in a statement. "We receive distress signals in the form of increasingly extreme rainfall, floods, and droughts which wreak a heavy toll on lives, ecosystems, and economies."
A total of 3.6 billion people struggle to access sufficient water for at least one month per year, according to U.N. Water, and this number is projected to swell to over 5 billion by 2050. In 2023, which was also the hottest year on record, river catchment areas around the world were at their driest in 33 years. As in the two years before, more than half of all catchment areas saw abnormal conditions, with most of them seeing below-average water flow.
Especially hard-hit river systems included the Mississippi and Amazon basins, which shrank to record-low water levels, as well as riparian systems in much of Northern, Central, and South America. Argentina's GDP shrank by 3% due to drought, the WMO found. Meanwhile, the report showed how major river systems in Asia—the Ganges, Brahmaputra, and Mekong river basins—were drier than usual across almost all of their reach.
Another threat to freshwater access is the melting of glaciers. In 2023, the world's glaciers lost their greatest amount of mass in 50 years at over 600 metric gigatons of water. This ice loss was primarily driven by melting in western North America and Europe's Alps. Switzerland's glaciers shrank by 10% in two years.
"It was either too dry or too wet—and neither is encouraging."
"The worldwide loss of glacier volume, equivalent to 600 gigatons of water according to the latest WMO report, is alarming," said report contributor Robert Reinecke of Johannes Gutenberg University Mainz. "It is the greatest loss we have witnessed in the past five decades."
Saulo added: "Melting ice and glaciers threaten long-term water security for many millions of people. And yet we are not taking the necessary urgent action."
While 2023 saw drought and ice melt, its high temperatures combined with the shift from La Niña to El Niño halfway through and the positive phase of the Indian Ocean Dipole also fueled extreme precipitation events.
"It was either too dry or too wet—and neither is encouraging," Reinecke said. "We have to expect both extremes more frequently as global temperatures continue to rise."
Africa saw the deadliest flooding, with Storm Daniel causing a dam collapse in Libya that killed more than 11,000 people in September 2023. Also hard hit were the Greater Horn of Africa, Congo, Rwanda, Mozambique, and Malawi.
"As a result of rising temperatures, the hydrological cycle has accelerated," Saulo said. "It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water. A warmer atmosphere holds more moisture which is conducive to heavy rainfall. More rapid evaporation and drying of soils worsen drought conditions."
To respond to these shifting conditions, WMO urged more monitoring and data sharing and said that the Early Warnings for All initiative must cover water-related hazards.
"Far too little is known about the true state of the world's freshwater resources," Saulo said. "We cannot manage what we do not measure. This report seeks to contribute to improved monitoring, data-sharing, cross-border collaboration, and assessments."
In response to the report, water advocate Mina Guli also called for increased conservation efforts.
"To tackle this crisis, we must invest more resources into protecting and restoring our freshwater ecosystems. Healthy rivers, lakes, and wetlands do so much more than provide water—they are our best defense against the worsening impacts of climate change and play a crucial role in ensuring food and water security while also reversing nature loss," Guli wrote on social media.
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The climate crisis is destabilizing the world's water cycle, depriving millions of people of the freshwater resources they need while inundating others with deadly and catastrophic floods.
That's the picture painted by the World Meteorological Organization (WMO)'s third-ever State of Global Water Resources report, released on Monday, which found that 2023 was the driest year for the world's rivers in more than three decades.
"Water is the canary in the coalmine of climate change," WMO Secretary-General Celeste Saulo said in a statement. "We receive distress signals in the form of increasingly extreme rainfall, floods, and droughts which wreak a heavy toll on lives, ecosystems, and economies."
A total of 3.6 billion people struggle to access sufficient water for at least one month per year, according to U.N. Water, and this number is projected to swell to over 5 billion by 2050. In 2023, which was also the hottest year on record, river catchment areas around the world were at their driest in 33 years. As in the two years before, more than half of all catchment areas saw abnormal conditions, with most of them seeing below-average water flow.
Especially hard-hit river systems included the Mississippi and Amazon basins, which shrank to record-low water levels, as well as riparian systems in much of Northern, Central, and South America. Argentina's GDP shrank by 3% due to drought, the WMO found. Meanwhile, the report showed how major river systems in Asia—the Ganges, Brahmaputra, and Mekong river basins—were drier than usual across almost all of their reach.
Another threat to freshwater access is the melting of glaciers. In 2023, the world's glaciers lost their greatest amount of mass in 50 years at over 600 metric gigatons of water. This ice loss was primarily driven by melting in western North America and Europe's Alps. Switzerland's glaciers shrank by 10% in two years.
"It was either too dry or too wet—and neither is encouraging."
"The worldwide loss of glacier volume, equivalent to 600 gigatons of water according to the latest WMO report, is alarming," said report contributor Robert Reinecke of Johannes Gutenberg University Mainz. "It is the greatest loss we have witnessed in the past five decades."
Saulo added: "Melting ice and glaciers threaten long-term water security for many millions of people. And yet we are not taking the necessary urgent action."
While 2023 saw drought and ice melt, its high temperatures combined with the shift from La Niña to El Niño halfway through and the positive phase of the Indian Ocean Dipole also fueled extreme precipitation events.
"It was either too dry or too wet—and neither is encouraging," Reinecke said. "We have to expect both extremes more frequently as global temperatures continue to rise."
Africa saw the deadliest flooding, with Storm Daniel causing a dam collapse in Libya that killed more than 11,000 people in September 2023. Also hard hit were the Greater Horn of Africa, Congo, Rwanda, Mozambique, and Malawi.
"As a result of rising temperatures, the hydrological cycle has accelerated," Saulo said. "It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water. A warmer atmosphere holds more moisture which is conducive to heavy rainfall. More rapid evaporation and drying of soils worsen drought conditions."
To respond to these shifting conditions, WMO urged more monitoring and data sharing and said that the Early Warnings for All initiative must cover water-related hazards.
"Far too little is known about the true state of the world's freshwater resources," Saulo said. "We cannot manage what we do not measure. This report seeks to contribute to improved monitoring, data-sharing, cross-border collaboration, and assessments."
In response to the report, water advocate Mina Guli also called for increased conservation efforts.
"To tackle this crisis, we must invest more resources into protecting and restoring our freshwater ecosystems. Healthy rivers, lakes, and wetlands do so much more than provide water—they are our best defense against the worsening impacts of climate change and play a crucial role in ensuring food and water security while also reversing nature loss," Guli wrote on social media.
The climate crisis is destabilizing the world's water cycle, depriving millions of people of the freshwater resources they need while inundating others with deadly and catastrophic floods.
That's the picture painted by the World Meteorological Organization (WMO)'s third-ever State of Global Water Resources report, released on Monday, which found that 2023 was the driest year for the world's rivers in more than three decades.
"Water is the canary in the coalmine of climate change," WMO Secretary-General Celeste Saulo said in a statement. "We receive distress signals in the form of increasingly extreme rainfall, floods, and droughts which wreak a heavy toll on lives, ecosystems, and economies."
A total of 3.6 billion people struggle to access sufficient water for at least one month per year, according to U.N. Water, and this number is projected to swell to over 5 billion by 2050. In 2023, which was also the hottest year on record, river catchment areas around the world were at their driest in 33 years. As in the two years before, more than half of all catchment areas saw abnormal conditions, with most of them seeing below-average water flow.
Especially hard-hit river systems included the Mississippi and Amazon basins, which shrank to record-low water levels, as well as riparian systems in much of Northern, Central, and South America. Argentina's GDP shrank by 3% due to drought, the WMO found. Meanwhile, the report showed how major river systems in Asia—the Ganges, Brahmaputra, and Mekong river basins—were drier than usual across almost all of their reach.
Another threat to freshwater access is the melting of glaciers. In 2023, the world's glaciers lost their greatest amount of mass in 50 years at over 600 metric gigatons of water. This ice loss was primarily driven by melting in western North America and Europe's Alps. Switzerland's glaciers shrank by 10% in two years.
"It was either too dry or too wet—and neither is encouraging."
"The worldwide loss of glacier volume, equivalent to 600 gigatons of water according to the latest WMO report, is alarming," said report contributor Robert Reinecke of Johannes Gutenberg University Mainz. "It is the greatest loss we have witnessed in the past five decades."
Saulo added: "Melting ice and glaciers threaten long-term water security for many millions of people. And yet we are not taking the necessary urgent action."
While 2023 saw drought and ice melt, its high temperatures combined with the shift from La Niña to El Niño halfway through and the positive phase of the Indian Ocean Dipole also fueled extreme precipitation events.
"It was either too dry or too wet—and neither is encouraging," Reinecke said. "We have to expect both extremes more frequently as global temperatures continue to rise."
Africa saw the deadliest flooding, with Storm Daniel causing a dam collapse in Libya that killed more than 11,000 people in September 2023. Also hard hit were the Greater Horn of Africa, Congo, Rwanda, Mozambique, and Malawi.
"As a result of rising temperatures, the hydrological cycle has accelerated," Saulo said. "It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water. A warmer atmosphere holds more moisture which is conducive to heavy rainfall. More rapid evaporation and drying of soils worsen drought conditions."
To respond to these shifting conditions, WMO urged more monitoring and data sharing and said that the Early Warnings for All initiative must cover water-related hazards.
"Far too little is known about the true state of the world's freshwater resources," Saulo said. "We cannot manage what we do not measure. This report seeks to contribute to improved monitoring, data-sharing, cross-border collaboration, and assessments."
In response to the report, water advocate Mina Guli also called for increased conservation efforts.
"To tackle this crisis, we must invest more resources into protecting and restoring our freshwater ecosystems. Healthy rivers, lakes, and wetlands do so much more than provide water—they are our best defense against the worsening impacts of climate change and play a crucial role in ensuring food and water security while also reversing nature loss," Guli wrote on social media.