I was watching the live feed on FOX 40. It was really dark out there.
https://www.youtube.com/embed/yF3j82YEsTo
They were dismantling some transmission lines below the dam
https://www.google.ca/amp/fox40.com/2017/02/10/pge-crews-dismantle-towers-in-path-of-emergency-spillway-at-oroville-dam/amp/