Lake Oroville, California's second-largest reservoir, has experienced dramatic swings in water levels over recent years, reflecting broader challenges in the state's management of water resources.

Love the water? California is home to the No. 1 lake in the nation, according to USA Today readers.

California reservoir water levels tend to continue improving through the spring snowmelt season. Once dry, warm weather arrives in the summer, the levels begin to decline.

Lake Oroville in Northern California’s Butte County is one of the state’s most important reservoirs. It’s part of a ...

The California Department of Water Resources urges caution, advising people to stay clear of algae and scum, supervise ...

A federal judge agreed that a 2016 law requires the Bureau of Reclamation to convert short-term contracts into permanent ones without imposing additional conditions or review.

The Chino Basin Project is intended to make Inland Valley residents less reliant on water from Northern California.

The Santa Ynez Reservoir has reopened — months after the devastating Palisades Fire. Los Angeles locals and officials aren't happy with the delay.

Years of drought forced the city to rethink its water usage and, almost under the radar, to remake its identity.

A small panel managed to extract a glassful of clean water from the bone-dry air of Death Valley in California, which ...