I'd bet that once the Eagle's done, that the Xcel (formerly Public Service) call will kick in and they'll release water from Green Mt. to give the Shoshone hydroelectric plant its due. Then you'll see the Lower Blue and Upper C with a bit more water in them, though it may only incrase gradually as the Eagle continues to drop until completely spent. Kara Lamb of the BuRec would be the one to ask. Find one of her posts and send her a note asking her to weigh in on this question.
--Andy