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The Colorado River’s Hydrology is Changing. Can We Adapt?

By Letitia Grenier, Sarah Bardeen

The Colorado River’s hydrology is changing—and the dwindling water supplies are hitting Southern California hard. We sat down with Colorado River Board of California’s chairman JB Hamby and Metropolitan Water District’s Bill Hasencamp to find out what’s next for the river.

Fact Sheet

Floods in California

By Jeffrey Mount, Gokce Sencan, Letitia Grenier

More than seven million Californians—one in five residents—live in areas at risk of flooding, and risks are growing. Improved land use planning, insurance, and innovative flood management can help.

blog post

Where Are Californians Going When They Leave the Golden State?

By Eric McGhee, Hans Johnson

California continues to lose residents to other parts of the US, with the main beneficiaries being neighboring states. However, with the pandemic receding and more workers returning to the office, outmigration patterns have started to slow or even reverse.

blog post

Who’s Leaving California—and Who’s Moving In?

By Hans Johnson, Eric McGhee

The primary driver of California's population loss over the past few years has been residents moving to other states. We examine the latest demographic data for those moving out of and into our state and discuss factors that underlie these decisions.

blog post

Making Sense of the Floods in San Diego

By Sarah Bardeen

The sudden deluge in San Diego last week has left some of that city’s communities reeling. But what actually caused the epic flooding—and could it have been avoided? We ask the experts.

Fact Sheet

Immigrants in California

By Marisol Cuellar Mejia, Cesar Alesi Perez, Hans Johnson

California is home to more than 10 million immigrants—almost a quarter of the foreign-born population nationwide. Almost half of California’s immigrants are from Latin America, but a majority of recent arrivals come from Asia.

Fact Sheet

California’s Population

By Hans Johnson, Marisol Cuellar Mejia, Eric McGhee

Growth in the nation’s most populous state has slowed notably in the 21st century, with recent years bringing a drop in population due to higher deaths, lower births, and changes in migration. More than half of Californians under 24 are Latino while more than half of Californians 65 and older are white.

blog post

Commentary: Californians Need to Do More to Prepare for Wet Years

By Letitia Grenier, Ellen Hanak

Climate change is supercharging the extremes of drought and flood in California. But our infrastructure and institutions remain woefully underprepared for rising flood risk and increasingly erratic rainfall. It’s time to take this threat—and this opportunity—seriously and accelerate preparations.

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