When water starts falling it really can change things in a hurry when it comes to effects on fishing.
The levels may be natural or induced but either way it can be a pain in the butt for fisher people.
A drop or rise of an inch wont barely be noticed. However when we talk like a foot higher or lower it can make big differences in the fishing.
When the water drops a lot it takes away good cover spots for fishing. What you need to do now is take a long hard look and envision where the cover may be.
What you want to do is take pictures and take notes. This way when the water comes back up you will have a great idea as to where the fish may be.