New Spillway Design Said To Pass Muster

The Board of Consultants determined the forensic teams’ list of potential Oroville Dam spillway failures are being addressed in the new design, according to a new memorandum published Last week. The board’s report said the spillway design is ready for final review, with major redesigns including heightening walls beside of the main spillway. Also, a wall dug into the ground that would block erosion up the emergency spillway weir has been moved 350 feet downhill, and is now 600 feet below the spillway weir. That is because there is better quality rock closer to the surface in the new location, according to the report.