Mercury News: Lake Oroville, California’s second-largest reservoir, is 99% full and rising

May 14 - In a clear sign that California is not facing water shortages or a drought this summer, Lake Oroville, the state’s second-largest reservoir and a key component of California’s water system, has nearly filled to the top. The massive reservoir, contained behind America’s tallest dam, was 99% full on May 12, 2026