Invisible Drought Assistance

I found this optimism to be a bit unexpected, but I'll take it:

Far below the Sacramento metro area are two large groundwater aquifers. These are able to hold 1.8 million acre-feet of water — nearly twice the amount of water as Folsom Reservoir — in the soil and rock crevices 2,000 feet below the surface. Unlike other parts of California, our groundwater aquifer is stable, sustainable and ready to serve as our drought buffer.

This wasn’t always the case. More than two decades ago, groundwater levels were declining dramatically, threatening the long-term viability of some groundwater-dependent communities. The American River was also overtaxed. So, in 2000, leaders across the region came together in the historic Water Forum Agreement to balance the needs of our communities and the environment by jointly managing surface water and groundwater.

Today, thanks to that effort, the Sacramento region’s groundwater aquifers are no longer declining, and mechanisms are in place to ensure they recharge on a regular basis. They are so stable, in fact, that we are able to use them as a Water Bank, storing water during wet years for use during dry years. 

We’ve achieved a lot of groundwater recharge naturally, simply by reducing reliance on the river. The less we pump out, the more water is available to seep into the aquifer. This means a significant portion of the Water Bank can be filled up without expensive new infrastructure.