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In California, groundwater accounts for around 41% of the state's total water supply, [1] although this number varies between wet and dry years. During years of greater than average rainfall, less groundwater is used to allow for reserves to be available during dry years. Up to 60% of all water can be sourced from groundwater during dry years.
In 2014, Gov. Jerry Brown signed historic legislation establishing a framework for California to begin managing groundwater in an effort to curb widespread overpumping, which had sent aquifer ...
Water balance. Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table ...
It would include $200 million for land repurposing, $15 million for water data, $610 million for safe and affordable drinking water and $386 million for groundwater programs.
Some California farming communities have been plagued for years by problems with their drinking water due to nitrates and other contaminants in the groundwater that feeds their wells. Advocates ...
California's interconnected water system serves almost 40 million people and irrigates over 5,680,000 acres (2,300,000 ha) of farmland. [1] As the world's largest, most productive, and potentially most controversial water system, [2] [page needed] it manages over 40 million acre-feet (49 km 3) of water per year. [3]
California’s San Joaquin Valley may be sinking nearly an inch per year due to the over-pumping of groundwater supplies, with resource extraction outpacing natural recharge, a new study has found.
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