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Approximately 85% of water used in California by farmers and residents today is from groundwater, with 6 million Californians relying solely on this resource. [2] The Central Valley is a big user of groundwater for agricultural purposes which supplies a large portion of food for not only California, but for the rest of the United States as well. [3]
[3] [4] As a result, investment into groundwater recharge basins has been steadily increasing in recent years. Groundwater projects are planned to provide an increase of 500,000 acre-feet annually to the water supply. [5] With 2023 being an extreme wet year, California achieved a record-setting 8.7 million acre-feet of groundwater to aquifers. [6]
Simi Valley groundwater basin: 4-9 12,100 394 Conejo Valley groundwater basin: 4-10 28,900 1,000 100 Coastal Plain of Los Angeles groundwater basin [5] 4-11 High San Fernando Valley groundwater basin: 4-12 High 145,000 3,240 1,220 San Gabriel Valley groundwater basin: 4-13 Medium 154,000 4,850 1,000 Tierra Rejada groundwater basin: 4-15 4,390 ...
California passed its landmark groundwater law in 2014. The goals of sustainable management remain a long way off. Despite California groundwater law, aquifers keep dropping in a 'race to the bottom'
After state regulators determined in 2022 that the Kern groundwater plans were inadequate, the 14 so-called groundwater sustainability agencies in the area began splitting and forming new local ...
The latest drought, from 2020 through 2022, set a record as California’s driest three-year period on record, and state data show more than 2,600 dry wells were reported during that time.
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]
Excessive groundwater pumping has long been depleting aquifers in California's Central Valley. Now, scientists say the depletion is accelerating.