From email from Reclamation (Kara Lamb):
Tomorrow morning at 8, Friday March 11, we will increase releases from Green Mountain Dam to the Lower Blue River by 25 cfs. By noon, the Lower Blue should be flowing at about 300 cfs. The reason for the change is Denver Water will be increasing their releases from Dillon Reservoir to the Blue River. Because releases from Dillon Dam flow straight to Green Mountain, we are accommodating the additional water by increasing our own release.
More Green Mountain Reservoir coverage here.