Under the La Niña weather pattern, California has experienced three consecutive years of high temperatures and drought, with tomato production in 2022 reaching the lowest level in 15 years. Drought and water scarcity have been long-standing issues in California. To ensure agricultural production and mitigate the unpredictability of natural precipitation, California constructed water storage facilities several decades ago. These facilities collect snowmelt and streamflow from the previous winter and store it in reservoirs scattered around farms for use in the following year's agricultural production. However, the three-year drought from 2020 to 2022 has resulted in a critical depletion of water reserves in California, directly causing a decline in tomato production from 10.26 million tons in 2020 to 9.51 million tons in 2022, a cumulative decrease of 7%.
The magnitude of the losses caused by this drought is not only due to the extreme weather conditions but also because California's current water supply system is unable to meet the needs of modern agriculture and urban development. The water supply system in California was built over 50 years ago when the population was around 20 million. Today, the population is nearly 40 million, and agricultural cultivation has doubled in scale. However, the government has not upgraded the water supply system, and the water storage capacity is insufficient to guarantee agricultural water demand. Another factor is the long-term overextraction of groundwater. During the five-year drought from 2012 to 2016, there was extensive pumping of groundwater for irrigation, which not only damaged natural resources but also exacerbated water scarcity issues.
As the weather pattern transitions to El Niño, California experienced multiple snowstorms and heavy rainfall during the winter, significantly increasing water supply and improving soil moisture conditions. The production is expected to recover. As of August 1, 2023, only 25.6% of areas in California are experiencing drought conditions, compared to the entire state being in drought at the same time last year, with nearly 60% of the areas in extreme drought. This indicates a significant improvement in California's weather this year. The WPTC predicts that California's processed tomato production will reach 10.9 million tons in 2023, a year-on-year increase of 14.6%. On the other hand, spring rainfall and floods have also resulted in delayed tomato planting, delayed crop maturity, and potential challenges such as difficulties in harvesting and increased risks of pests and diseases.
