My understanding is the boards were lost last fall. Duke has to be able to pull the lake down a couple of feet below the crest of the dam and hold it for the days it takes to replace the boards which isn't an easy task. As you know, its been very wet this past winter. They can only pass so much water through the turbines so if there is more then that coming down the river it flows over the crest of the dam. Until flows stay down for a while don't expect the boards to be replaced.