The chance that Oroville Dam’s reconstructed primary spillway gets used in the coming days is unlikely, the California Department of Water Resources said Friday. Still, water officials are keeping a close watch on the Lake Oroville water level, which is rising. Inflows into the lake as the result of mountain runoff, as well as predicted rainfall, will lead the water in Lake Oroville to continue to rise. As of 5 p.m. Friday, the lake sat at roughly 775 feet, far below the main spillway gates, which are at 813 feet. So, how does it all work? Here’s how things could play out, according to DWR.