The increase in flows on the South Fork of the Boise River below Anderson Ranch Reservoir has been postponed to next week, the U.S. Bureau of Reclamation announced Thursday (June 19).
The federal agency had planned to increase the flows to 1,600 cfs Friday or Monday but the increase has been delayed until Wednesday (June 25).
Drift boat and raft anglers prefer the higher flows. Wading anglers like lower flows. The river is running around 600 cfs today (June 19), which is ideal for wading anglers.
Inflows into Anderson Ranch Reservoir, upstream from the trophy trout fishing area below the dam have fallen off drastically, the agency said. With less water coming into the reservoir, higher flows are being delayed below the dam.