‘Broken Promises’ County Officials, Public Sound off on Current and Historical Problems at Oroville Dam

A deluge of grievances regarding long-stalled relicensing, management and repairs at the Oroville Dam prompted by the recent crisis at the reservoir were aired at the Butte County Board of Supervisors meeting Tuesday (April 11). Discussion of the dam, which lasted more than two hours, was agendized as an informational update regarding the facility’s relicensing … Read more

Oroville Disaster May Have Been Caused by Weak Soil Under Spillway

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

Oroville Dam Documents Kept Secret by State, Federal Officials

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