California said Thursday it has shut down a large hydroelectric power plant as water levels at a nearby reservoir fell close to the minimum needed to generate electricity, underscoring the challenges faced by the nation’s most populous state as it grapples with climate change.

State officials said in a statement that the Hyatt Power Plant was taken offline after water levels at Lake Oroville, located next to the plant, fell to slightly above 640 feet, or lowest in decades. That is just over the 630-to-640-feet level needed to produce power. The lowered water levels are due to a severe drought caused by climate change, officials said.

Man-made Lake Oroville, about 110 miles northeast of the San Francisco Bay Area and about 70 miles north of Sacramento, is about a third of the size of Washington when full. It serves as a water reserve and flood storage for many communities in northern California.

Concerns have been raised that the shutdown of the power plant could lead to rolling blackouts statewide later this summer. But officials suggested a sudden disruption to water or electricity supplies for nearby areas isn’t likely.

“The state has planned for its loss in both water and grid management,” said Karla Nemeth, director of the state’s water resources department, in a statement.

But Nemeth also called on Californians to reduce their water usage by 15 percent to preserve water supply. “This is just one of many unprecedented impacts we are experiencing in California as a result of our climate-induced drought,” she said.

While California regularly experiences droughts, there was much less water runoff into the lake in spring, resulting in historically low levels of water in the lake, officials said. This is the first time the plant has had to shut since it went into operation in 1967.

The plant can generate up to 750 megawatts of power at full capacity but has often produced between 100 and 400 megawatts, or slightly under 1 percent of California’s average daily peak usage, according to the Los Angeles Times.

The state water resources department projected last week that Lake Oroville could see water levels fall to as low as 620 feet by October. California is suffering from yet another year of natural disasters, including the devastating Dixie Fire that has been burning for three weeks.