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How Did California’s Drought Get So Bad? - The New York Times

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A warmer California is making the drought far worse.

Houseboats in a narrow section of a depleted Lake Oroville last month.
Josh Edelson/Agence France-Presse — Getty Images

No matter how you slice it, the drought in California is extremely, exceptionally bad.

The past 12 months were the driest in a century. Lake Mead, one of our most crucial water sources, has dropped to its lowest level ever. And Californians aren’t conserving anywhere close to the 15 percent cutback in water use that officials have called for.

With these grim fortunes in mind, Gov. Gavin Newsom this week declared a drought emergency for the entire state and called on Californians to “redouble our efforts to save water in every way possible.”

You might be wondering why this is such a big deal, given that periods of low rainfall have long been par for the course in California.

The short answer? Heat.

Because of human-induced climate change, California is experiencing warmer temperatures, and this summer was our hottest on record. That unusually balmy weather exacerbates drought conditions — and transforms what could be a normal fluctuation in precipitation into a full-blown crisis.

Here’s how this happens: California relies on snowpacks to store water, but during warm winters, that snow increasingly falls as rain instead. And what little snow does collect melts earlier in the year.

“By the time you reach late summer — August, September, October — and its scorching temperatures, there’s not a cloud in the sky and California must rely on water that’s fallen on the snowpack the previous winter,” Julien Emile-Geay, a climate scientist at the University of Southern California, told me. “Increasingly, that water is long gone by that point.”

This year, the Sierra Nevada snowpack had already dwindled to next to nothing by June.

There’s also another, slightly more complicated, piece of this “heat plus drought” equation, sometimes described as the atmosphere’s thirst.

When the air is warmer, it can hold more moisture — about 7 percent more with every degree Celsius of warming. The air absorbs water from nearby lakes, plants and soil, further drying out the already parched land and depleting water supplies.

(In typically wetter climates, warmer air still holds more water, but it also releases it, which is why storms on the East Coast are becoming more intense.)

That “thirst” in California has created drought conditions similar to what we would normally experience only after four or five years of a dry spell. We’re in our second year of drought, yet Lake Oroville, a major reservoir, has less water than ever before.

And, despite rain blanketing much of the state this week, officials are predicting that this winter will bring La Niña, a weather phenomenon that typically leaves California exceptionally dry.

Tell us how you are saving water during the drought. Email me at catoday@nytimes.com.

For more:


Ringo H.W. Chiu/Associated Press

SOUTHERN CALIFORNIA

  • Los Angeles zoo: Exhibit upgrades and new attractions are part of a planned $650 million transformation to the Los Angeles Zoo over the next 20 years, The Associated Press reports.

  • Lakers lose first game: Los Angeles remade its basketball roster around big names, but getting them all on the same page is a work in progress.

  • City councilman suspended: Mark Ridley-Thomas, a Los Angeles city councilman who was indicted on federal charges of public corruption, was suspended from the Council without pay, The Associated Press reports.

CENTRAL CALIFORNIA

  • Valley rain: A storm expected to arrive in the Central Valley by Sunday or Monday could bring up to two inches of rain to Fresno. It may be the strongest storm to hit the area in two years, GV Wire reports.

NORTHERN CALIFORNIA


Jenny Huang for The New York Times

This one-pot pasta with ricotta and lemon.


Today’s tip comes from Judy Schultze, who recommends Corralitos in Santa Cruz County:

Just 10 minutes east of Highway 1, nestled in a beautiful little valley, surrounded by apple orchards, vineyards and redwood trees in nearby woods, is a small gem. There are a couple of casual restaurants, family-owned wineries, and a venerable sausage company/food market that draws loyal customers from all over the area. Biking along country lanes, hiking in a nearby forest preserve, driving through windy roads with old redwood groves, as well as wine tasting locally grown wines, are just a few of the low-keyed attractions.

Tell us about your favorite places to visit in California. Email your suggestions to CAtoday@nytimes.com. We’ll be sharing more in upcoming editions of the newsletter.


Jess T. Dugan and Catherine Edelman Gallery, Chicago

From New York to Los Angeles, photography that focuses on those who are often not seen.


The mind-blowing, shape-shifting dance company Pilobolus will perform at Zellerbach Hall at the University of California, Berkeley, today and tomorrow.

Watch some of the troupe’s incredible videos here.


Thanks for reading. I’ll be back tomorrow. — Soumya

P.S. Here’s today’s Mini Crossword, and a clue: South African of Dutch descent (4 letters).

Steven Moity and Mariel Wamsley contributed to California Today. You can reach the team at CAtoday@nytimes.com.

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