This is especially true in areas where agriculture is increasing, often drawing a higher water demand in dry climates. For example, according to Science News, California's Central Valley pulls almost 4 cubic kilometers of groundwater per year. That's enough to fill over 1.5 million Olympic sized swimming pools- and that's only one region of the globe. Other factors, such as climate change, worsen the problem. In order to reach a more globally sustainable levels, changes will have to be made in irrigation and other water management practices.
Want to learn more about gravity-monitoring satellites or groundwater levels?
- Access Science News at the Water Library or other UW Madison Libraries
- Check out our Understanding and Protecting Groundwater book list
- Visit the EPA's Groundwater and Drinking Water web page
- Visit the GRACE Gravity Recovery and Climate Experiment web page