From email from Reclamation (Dan Crabtree):
As the runoff continues to subside, Reclamation believes it is necessary to further reduce flows in the Gunnison River below the Aspinall Unit. The Colorado Basin River Forecast Center is showing inflow to Blue Mesa continuing to drop from the current level of around 5,000 cfs to 2,100 cfs by mid July. The Uncompahgre Valley Water Users, who had reduced diversions through the Gunnison Tunnel a week ago because the Uncompahgre River was filling their needs, are now in need of filling the Tunnel. To facilitate the filling of Blue Mesa Reservoir, Reclamation will not be matching their increased diversions, which will take place starting on Thursday, June 30th, with increased releases from the Aspinall Unit. This will result in a flow reduction in the Gunnison River of approximately 200 cfs bringing flows in the Canyon and Gorge to around 1,100 cfs as measured at the gage below the Gunnison Tunnel. We know this is inconsistent with information previously provided, but hydrologic conditions are constantly changing and we must react to current circumstances and forecasts.
More Aspinall Unit coverage here.