In a race to fix the damaged Oroville Dam’s main spillway by November, California Dept. of Water Resources, the operator of the country’s tallest dam, is going to bid with a 65%-complete design that breaks recovery efforts into three parts, with an ultimate goal of doubling the main spillway’s release
After armoring the damaged Oroville dam spillway, California Department of Water Resources is draining the lake at a rate of 40,000 cubic feet per second.
A trio of spillway failures at the 770-ft-tall earthfill Oroville Dam that prompted the evacuation of more than 188,000 people from central California has renewed questions about the reliability of hundreds of dams in the state and more nationally.
After more than 188,000 people evacuated from central California towns north of Sacramento, crews at Oroville Dam on Feb. 13 scrambled to fill erosion that developed hours after an emergency spillway was put into service for the first time in the dam’s 50-year history.
When Michael Braden took over as U.S Army Corps of Engineers’ divisions chief for the Olmsted Locks and Dam in 2013, job No. 1 was getting the $3.1-billion project back on schedule.
South Carolina legislators have taken steps to strengthen the state’s dam-safety laws, which came under fire after more than 30 structures failed during a 1,000-year flood event in October 2015.