The lake I fish kept the same level, even after all the rain we've had recently, and it fished very well. Then the level rose on the surrounding land, and it started filling the lake up, it only rose about 6" or so, but that's a lot of cold water, and the fishing took a little nose dive. It's still fishing reasonably well, unfortunately for me it doesn't seem to have affected the carp, and they're still chewing like mad.