Aquifers around the world are shrinking, according to a study by scientists at the University of California, Santa Barbara.
Lead author Debra Perrone noted that their study, which covers more than 1,700 aquifers, was the world’s largest analysis of global groundwater levels. Over three years, scientists collected and analyzed data from millions of water level measurements in 1.5 million wells over the past 100 years.
The results of the study confirmed that the groundwater level is decreasing in 71% of aquifers, and the rate of depletion is accelerating. The problem is particularly acute in arid and semi-arid regions, where the development of new land also increases pressure on water resources.
An interesting point is that scientists have found a reverse trend in 16% of aquifer systems, where the groundwater level has stabilized or recovered. These positive examples demonstrate that with focused efforts, it is possible to reverse extremely negative trends.
The second author, Scott Jasechko, emphasized that despite the intuitiveness of such conclusions, it is important to have data to support them. He noted that their study not only provides statistical support for these facts, but also emphasizes the need for targeted efforts to eliminate the problem.
It is generally accepted by scientists that global groundwater depletion is not inevitable. Against the backdrop of stabilized aquifer systems supported by historical data, researchers emphasize the possibility of positive changes in this area. However, they warn that in order to succeed, it is necessary to focus on water management and make informed decisions for a sustainable future.
