Crews reach groundwater by drilling wells and pumping it to the surface. However, that’s presented a major issue: the groundwater isn’t unlimited.
Crews reach the groundwater by drilling wells and pump it to the surface. But that’s presented a major issue: the groundwater isn’t unlimited.When we talk about California’s water, we often think of what we can see: a snowpack, reservoirs to hold water, and aqueducts to deliver water to communities throughout the state. There is another source of water for California, and it sits deep under our feet. It’s called groundwater.
The California Department of Water Resources estimates that the state has roughly 850 million – 1.3 billion acre-feet of groundwater, but not all of it is usable. In comparison, the major reservoirs in California can hold a combined 50 million acre-feet of water. Groundwater makes up roughly 40% of the state’s water supply, with that number fluctuating based on wet or dry years.Sign up for NBC San Diego newsletters.
Changes on the surface have also had an impact on groundwater. As rain falls, the water percolates through the ground into the aquifers. Urban areas make it more difficult to replenish groundwater in spots. During rain, water is instead diverted through storm drains, or is unable to soak through pavement. Some areas have tried to mitigate this by pumping water from the surface into the aquifer, or through spreading basins.
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