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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
The SGMA determined 43 high-priority groundwater basins and 84 medium-priority groundwater basins, totaling 127 basins accounting for 96% of California's groundwater. These basins must adopt GSPs by 2020 or 2022 (depending on the basin) and have until 2040 or 2042 to attain sustainability.
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 ...
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'
A decade after signing of California groundwater law, major challenges remain. Ian James. September 17, 2024 at 3:00 AM. Water flows from a well to irrigate an orchard in Visalia in 2021.
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.
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.