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California aquifers, excerpted from map in Ground Water Atlas of the United States (USGS, 2000): Lavender is "other" for "rocks that generally yield less than 10 gal/min to wells"; dark green-blue (3) are the California coastal basin aquifers, bright-turquoise blue (7) is the Central Valley aquifer system, flat cobalt-blue (1) down south is Basin and Range aquifers
California's groundwater levels rose significantly in 2023, one of the wettest years in decades. State officials say efforts to replenish aquifers helped.
Scientists using seismic data tracked groundwater levels beneath the L.A. area. They found heavy rains in 2023 boosted shallow waters, but deep aquifers remain depleted.
The Groundwater Ambient Monitoring and Assessment Program (GAMA) is an all-inclusive monitoring program for groundwater that was implemented in 2000 in California, United States. It was created by the California State Water Resources Control Board as an improvement from groundwater programs that were already in place.
California groundwater basins, subbasins, and hydrologic regions. The California Department of Water Resources recognizes 10 hydrologic regions and three additional drainage areas within the U.S. state of California. The hydrologic regions are further subdivided into 515 groundwater basins. [1]
In a new study, scientists begin to map underground channels that are optimal areas for recharging California's groundwater in the Central Valley.
Groundwater recharge projects are expected to increase in number in future years throughout California due to the comparatively low cost and massive storage capabilities of aquifers. The total volume of groundwater capacity is estimated to be 850 million acre-feet, while there is only around 50 million acre-feet of available surface freshwater ...
The state groundwater law, which was signed nearly 10 years ago, requires local agencies in many areas to develop groundwater plans and curb overpumping by 2040.