More on fish survival in this drought. I read a report of an interview with one of the park's biologists - it seems that, while adult trout are definitely suffering, the younger fish seem to be holding their own. Also, the fatality rates are still right in line with what a "normal" year would bring.
One thing to keep in mind...there really is no such thing as a "normal" year, only averages. Droughts and floods are part of the normal climate, and over time tend to average out. It's hard for us to watch, though...we want to help the fish, but unfortunately we can't. It does look like the worst of the heat/no rain is over, and of course there is still the very real possibility a decaying tropical system could move over the mountains.