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Tracking California’s Water Supplies

The American Southwest recently experienced its driest period in 1,200 years. Storms in the winter of 2023 eased some of California’s extreme drought conditions, but officials stress that conservation should remain a way of life.

This page tracks hydrological conditions, precipitation, the Sierra snowpack and the largest reservoirs serving the state.

Another Wet Year is Predicted in California. Officials Say This Time They’re Better Prepared

Water leaders across California are beginning to prepare for another wet winter, as a new water year got underway this week.

According to the U.S. Bureau of Reclamation, the state’s reservoirs are the fullest they’ve been at the start of a water year in 40 years. And, with an El Niño weather pattern looking more and more likely, so is the possibility for a lot of rain in the months ahead.

California Reservoir Water Levels Before and After Winter Storm

After another week of severe winter weather, levels in California’s recovering water reservoirs have continued to rise, signaling good news for the state’s summer water supplies.

This follows weeks of considerable rain and snowfall in California since the start of 2023.