Even though the water temperature is in the 40s, if you stay out of the water, it can be a pleasant float in the 80-degree temps.
The river is in the 700 to 800 cfs range, which is considered moderately low for summertime flows.
The river is cold. I was wading in it while doing retrieving practice with my pooch. My toes were numb in no time at all.
Photo by Pete Zimowsky/Idaho Statesman