The Hyatt Powerhouse under Oroville Dam went back online Friday after removal of debris from the bottom of the main Oroville Dam spillway allowed the level of the Diversion Pool to be reduced. Acting Department of Water Resources Director Bill Croyle said in a press conference at noon Friday that two of the six turbines were in operation and that the power plant would be ramped up as the day went along. Croyle said one of the six turbines is under maintenance.