OROVILLE, Calif.—The water level dropped Monday at the nation’s tallest dam, easing slightly the fears of a catastrophic spillway collapse that prompted authorities to order nearly 200,000 people to leave their homes downstream.
But with more rain expected later in the week, time was running short to fix the damage ahead of the storms.
Officials from the California Department of Water Resources were considering using helicopters to drop loads of rock on the eroded spillway at Lake Oroville, about 150 miles northeast of San Francisco.
Nearly 200,000 people remained under evacuation orders on Monday.
