January 12, 2025
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VIDEO: Weekly California Water Market Report
How Are California’s Stored Water Supplies Faring After Recent Atmospheric Rivers?
California’s water supply relies on two key storage mechanisms: man-made reservoirs and natural snowpack. These sources sustain the state through dry seasons, but precipitation patterns significantly impact their replenishment.
Over the past week, two atmospheric rivers delivered much-needed water to parts of California. However, compared to the same period in 2023 and 2024, overall precipitation levels are lower. In 2023, multiple AR events bolstered water supplies, while 2024 saw more evenly distributed rainfall benefiting both Northern and Southern California.
So far in 2025, rainfall has been concentrated in Northern California, with little to no precipitation in the south and minimal rain in the Central Valley—raising concerns for future water supply. However, precipitation alone isn’t a perfect indicator of stored water levels, as reservoir storage and snowpack conditions play a crucial role.
As we move further into 2025, monitoring California’s water reserves will be critical for assessing the state’s long-term water security.
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