Flow out of Mackay Dam remains around 130 cfs. It has been near this figure for several weeks now. This should catch your eye because it indicates a stable fishery. The Big Lost River below Mackay Dam now offers the most consistent fishing in this part of Idaho. It will stay that way until flows are bumped up. Midge and BWO life cycle patterns should be in your fly box when you visit here. Small bead head nymphs and annelid patterns should be there too. Afternoons will offer the best fishing.