OROVILLE, Calif. (AP) — The critical document that determines how much space should be left in Lake Oroville for flood control during the rainy season hasn’t been updated in 47 years.
The Sacramento Bee reports (http://bit.ly/2kUEn66 ) the outdated document uses climatological data and runoff projections that don’t account for two past floods.
Independent experts familiar with the flood-control manual at Oroville Dam say there’s no indication the outdated document contributed to the ongoing crisis involving the dam’s ailing spillways. Structural failures are the trouble.
But experts say the manual points to larger operational issues that affect most of California’s primary flood-control dams.
Most Read Stories
- Foreign buyers drop off as Seattle housing market hits hottest tempo since 2006 bubble
- What drivers can and cannot do under Washington state's new distracted-driving law
- ‘A painful and frustrating experience’: Horizon Air scheduling havoc will continue into the fall
- Seattle police after organizer cancels popular Magnuson Park movie nights: ‘The park is safe’
- Dining on roadkill: Washington residents gather 1,600 deer, elk in law's first year VIEW
Last week, the Department of Water Resources discovered a massive crater in the concrete-lined spillway.
Later, the emergency spillway was used. But erosion began to progress up the right side, prompting authorities to order an evacuation of 188,000 people.