Water will stop flowing from Oroville Dam’s badly damaged spillway on Friday, in the hopes it’s the last time it will be used before the next rainy season. Even with a heavy snowpack waiting to melt in the mountains above Lake Oroville, state officials say they’ve drained the reservoir down to the point where they can manage its level through the dam’s primary powerplant outlet. The lake was at 74 percent of its total capacity Wednesday.