Concerned Trinity Dam could suffer the same fate as Oroville Dam — which had a near catastrophic failure this past winter — the Trinity County Board of Supervisors on Tuesday agreed to continue to pursue getting an emergency spillway built on the dam. Supervisor Bill Burton said residents in his district watched the Oroville Dam incident unfold … Read more
The spillway problems that occurred at the Oroville Dam in February may be part of more systemic issues in the dam industry, says Stanford dam expert Martin McCann, Jr. ON MAY 3, California’s Department of Water Resources (DWR) released the fourth report by an independent board of consultants examining what went wrong during the Oroville Dam … Read more
Gov. Jerry Brown’s administration is using federal security regulations written to thwart terrorism to deny public access to records that experts say could guide repairs to the Oroville Dam and provide insight into what led to the near catastrophic failure of its emergency spillway. The administration also is blocking public review of records that would … Read more
State legislators aren’t getting answers about the Lake Oroville spillway. Neither is the federal government. Or the county government. Or journalists. Or the public. But matters are coming to a head as two north state legislators whose districts include Lake Oroville are demanding answers. It’s about time. Last Thursday, Assemblyman James Gallagher, R-Yuba City, admitted … Read more
Portions of Oroville Dam’s damaged spillway may have been built atop highly weathered rock, geologists say, a type vulnerable to erosion during the weeks of rain that led up to the disaster. THE DESTRUCTION OF Oroville Dam’s main spillway in February likely occurred because it was built on highly erodible rock, according to several experts interviewed … Read more
Citing potential security risks, state and federal officials are blocking the public’s ability to review documents that could shed light on repair plans and safety issues at crippled Oroville Dam. One of the secret reports is a memo from an independent panel of experts brought in to guide state officials’ repair plans. Another confidential document … Read more
First part of a series. For nearly 50 years, Oroville Dam has been the linchpin of a sprawling state plumbing system that draws water from wet Northern California to 25 million people and thousands of acres of farmland in the arid south. That changed Feb. 7 when a crater as large as a football field … Read more
You hear this every time there’s a drought or deluge in California: “Why haven’t they built more dams?” Truth is, they’ve built a bunch. And they’re about done with it. Tally them up. There are more than 1,400 dams in the state. At least 1,000 are major and 55 can hold 100,000 acre-feet or more … Read more
With extreme weather putting increasing stress on California’s roads, bridges and flood control system, Governor Edmund G. Brown Jr. today announced a series of immediate and longer-term actions to bolster dam safety, improve flood protection and fix the state’s aging transportation and water infrastructure. “Recent storms have pounded the state of California resulting in a … Read more
After two weeks that saw evacuations near Oroville, Calif., and flooding in Elko County, Nev., America’s dams are showing their age. Nearly 2,000 state-regulated high-hazard dams in the United States were listed as being in need of repair in 2015, according to the Association of State Dam Safety Officials. A dam is considered “high hazard” … Read more