Water level drops behind damaged California dam
The water level dropped Monday behind the nation’s tallest dam, reducing the risk of a catastrophic spillway collapse and easing fears that prompted the evacuation of nearly 200,000 people downstream.
As the day began, officials from the California Department of Water Resources prepared to inspect an erosion scar on the spillway at the dam on Lake Oroville, about 150 miles northeast of San Francisco.
Authorities ordered evacuations Sunday for everyone living below the lake out of concern that the spillway could fail and send a 30-foot wall of water roaring downstream.
“We grabbed our dog and headed to higher ground — away from the river,” said Kimberly Cumings, who moved with her husband, Patrick, and 3-year-old daughter to Oroville from Fresno a month ago for a new job. They were eating at a restaurant when the evacuation order came.
A driver with a large vehicle and three children of her own gave them a ride to the Red Cross evacuation centre at the Silver Dollar Fairgrounds in Chico.
“You can’t take a chance with the baby,” Patrick Cumings said of their decision to flee.
The water level in Lake Oroville rose significantly in recent weeks after a series of storms that dumped rain and snow across California, particularly in northern parts of the state. The high water forced the use of the dam’s emergency spillway, or overflow, for the first time in the dam’s nearly 50-year history on Saturday.
The threat appeared to ease somewhat Monday as the water level dropped. Officials said water was flowing out of the lake at nearly twice the rate as water flowing into it.
Sunday afternoon’s evacuation order came after engineers spotted a hole on the concrete lip of the secondary spillway for the 770-foot-tall Oroville Dam and told authorities that it could fail within the hour.
With more rain expected Wednesday and Thursday, officials were rushing to try to fix the damage and hoping to reduce the dam’s water level by 50 feet ahead of the storms.
The sudden evacuation panicked residents, who scrambled to get their belongings into cars and then grew angry as they sat in bumper-to-bumper traffic hours after the evacuation order was given.
Raj Gill, managing a Shell station where anxious motorists got gas and snacks, said his boss told him to close the station and flee himself. But he stayed open to feed a steady line of customers.
“You can’t even move,” he said. “I’m trying to get out of here too. I’m worried about the flooding. I’ve seen the pictures — that’s a lot of water.”
A Red Cross spokeswoman said more than 500 people showed up at an evacuation centre in Chico, California.
The shelter ran out of blankets and cots, and a tractortrailer with 1,000 more cots was stuck in the gridlock of traffic fleeing the potential flooding Sunday night, Red Cross shelter manager Pam Deditch said.
At least 250 California law enforcement officers were posted near the dam and along evacuation routes to manage the exodus and ensure evacuated towns don’t become targets for looting or other criminal activity.
Butte County Sheriff Kory Honea said a lot was still unknown.
“We need to continue to lower the lake levels, and we need to give the Department of Water Resources time to fully evaluate the situation so we can make the decision to whether or not it is safe to repopulate the area,” Honea said.
About 188,000 residents of Yuba, Sutter and Butte counties were ordered to evacuate.
This Saturday aerial photo shows the damaged spillway with eroded hillside in Oroville, Calif. Water will continue to flow over an emergency spillway at the U.S.’s tallest dam for another day or so, officials said Sunday.