A dump truck crosses the primary spillway on way to deliver boulders to the damaged emergency spillway at Lake Oroville Monday eveningOfficials have begun a complex operation aimed at trying to repair the damaged emergency spillway at Oroville Dam in advance of new storms coming to the area. Chris Orrock, spokesman for the Department of Water Resources, said workers were beginning a multi-part operation to repair the emergency spillway. Dump trucks are also bringing in more rocks to patch other spots and create slurry to solidify it. But on Sunday, officials noticed a hole in the emergency spillway. That brought water levels low enough that water stopped flowing from the emergency spillway.

Source: Los Angeles Times February 14, 2017 03:01 UTC