When any lake, pond or any body of water gets drawn down, the bass have less water and fewer places to hide. The bass become more concentrated because there is less water.
When the water levels rise back up the bass can spread out more and have many more places to find cover. A great example would be when the water is high and it gets way back into a treeline, grass line, docks etc. The further back into that structure the bass will be and of course much harder to catch. When that same treeline, grass line or dock has the water drawn away from it, the bass will move out with the water in turn making them easier to catch when not so deep into the structure.
Another point is, in the lake you are fishing, one side is totally unreachable to anglers. This would definitely be a big disadvantage, because that could be the place that has better habitat for bass to live and feed. Also every year is different, not just weather-wise but we have seasons. Bass will relocate, live, feed and spawn in different places during these seasons and weather changes. So even subtle changes in these things will have the bass acting differently. These changes that occur are difficult to predict. What I mean is each year spring might be delayed because of a long cold winter and water temperatures do not warm up as fast. These transition times make bass more difficult to catch.
There are certain techniques that you can use to catch more bass during these transitional times. You said there has been more rain, and the lake is really much higher then usual, is a big change. The rain will change the water temperatures and the oxygen content also. Anglers have a tendency to use the same baits that they always catch fish on. When these changes occur is the time to start fishing different baits in locations that you have not fished, even though they were right in front of you. You would be surprised how many bass can be right within a cast of you, but you ignore casting there because you think it's not a good place for a bass to be. Or you might cast there but with the wrong bait.
Here are some other suggestions. When the rain drives the lake up, new and different type of forage gets released into the lake. Crayfish, worms and other insects now become a bigger part of the food chain. So baits such as un-weighted trick worms, jigs, grubs and jig-n-pig combinations work well. Slowing down your presentation is also something anglers have a hard time doing. Using a Carolina rig is a great change from a Texas rig -- it forces you to slow down the presentation. Try some of these suggestions and let us know how it works.
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