Science Stories
The United States faces growing challenges to its water supply, and we need to know where there is not enough water, where we have more than we need, and the quality of the water. Learn more about how the USGS science is helping our Nation understand and address water availability issues.
Where surface water runs low, groundwater supplements water supply
Both surface water and groundwater provide critical water supplies across the United States. In surface-water limited regions, users turn to groundwater to meet water demand. But water above and below the ground can be closely connected. Is groundwater the answer to limited surface water supplies?