![]() While efforts are underway to augment water supplies-for instance by increasing groundwater recharge-bringing basins into balance is also likely to entail reductions in irrigated crop acreage. ![]() SGMA requires local groundwater sustainability agencies (GSAs) to end groundwater overdraft by 2040, while addressing the associated undesirable effects.Īs SGMA implementation unfolds, it will have extensive impacts on the San Joaquin Valley’s agricultural landscapes. In response to the undesirable effects of overdraft such as dry wells, land subsidence, and declining drought reserves, California passed the landmark Sustainable Groundwater Management Act (SGMA) in 2014. Groundwater overdraft in the San Joaquin Valley-the state’s largest farming region-has long been a problem. In many parts of California, agricultural production has relied for decades on largely unregulated groundwater pumping. Various research efforts would facilitate the development of water-limited cropping as an alternative to widespread land idling, including research to improve crop modeling for valley conditions, improve the performance of water-limited cropping systems, expand the portfolio of water-limited crops, understand key interactions such as salinity and weed pressure, and understand the market potential and price/cost thresholds for the economic viability of water-limited crops.
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