Yellow Perch - what's going on?

[fishhawk2700]

I know where those perch went.

[itsbob]

One of the things I have watched over the years is water temperature.I usually get my info from the weather Bouy,since I look at that website so often.unfortunately,the Bouy has not posted water temps in past 2mo.Must be broken.What I have seen in regard to water temp at Bouy is it peaks at 77-78 degrees and starts going down the second week in Sept.This year the water temps peaked at usual temp but started down during last week August.So water temps are in the normal range this year.