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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
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 ...
Groundwater pumping has been causing the land to sink at a record pace in California's San Joaquin Valley. New research suggests ways of addressing the problem.
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]
California's groundwater levels rose significantly in 2023, one of the wettest years in decades. State officials say efforts to replenish aquifers helped.
After massive downpours flooded California’s rivers and packed mountains with snow, the state reported Monday the first increase in groundwater supplies in four years. The state saw 4.1 million ...
Well yield (gpm) Maximum [4] Well yield (gpm) Average [4] Notes Upper Ojai Valley groundwater basin: 4-1 3,800 200 50 Ojai Valley groundwater basin: 4-2 Medium 6,830 600 383 Ventura River Valley groundwater Basin: 4-3 12,710 Santa Clara River Valley groundwater basin: 4-4 High Acton Valley groundwater basin: 4-5 8,270 1,000 140 Pleasant Valley ...
Read more:A decade after signing of California groundwater law, ... By the early 2010s, this long subterranean decline finally became impossible to ignore as drought dried up wells, land sank and ...