From email from Reclamation (Kara Lamb):
Due to the recent high-rate of snowmelt run-off, we thought it would be best to provide folks in and around the area of Lake Granby some information about possible operations at Granby Dam later this month. With the elevated inflows we continue to see at Lake Granby, it is very likely we will fill the reservoir by the last weekend of June. Once the reservoir is full, inflow will be bypassed on downstream using both the outlet at the dam and the spillway. The last time we utilized the spillway to bypass inflow was in the year 2000.
More Colorado-Big Thompson project coverage here.