Huh?

Someone want to explain this quote from Channel 11 reporter Raquel Eatmon as she was doing a boating safety story (which we've heard a million times)?: "We are also told that the water level right now [at lake Lewisville] is about seven feet below its normal level, and officials are hoping that is a good sign for them - that swimmers will avoid those deep, dangerous areas." (Channel 11 at 5:35 p.m.)