The conditions you are describing would occur if they had to release alot of water. With the small amount that they are letting thru , (and they have to let some at all times or the river bed would be completely dry ) is coming from the bottom of a still very deep lake. All reports from fish and wildlife biologist were that if we had alot of rain the o 2 levels would deplete and the temps would go up if they had to pull alot of water thru the dam.The water wouldn't have time to cool in the depths of the lake. According to the experts the condition you are getting right now are the best for all the species below the dam...