Great question to which I do not have a great answer
While sitting on a large school of crappie on brush Saturday. You could see the mud line working its way down the creek from the rain that morning. As the mud line got closer the school of what looked to be 200+ (LiveScope) fish, they started to disappear. After that we could not find a single fish anywhere! All of that to say, where do the crappie go when the water turns to mud?
Great question to which I do not have a great answer
I just found this. It has some interesting information.
4 Principles for Catching Crappie in Muddy Water | Havalon Knives