There is a few blues in there, I have fished that lake for many years, and they started showing up on a regular basis about four years ago. Most of the ones we caught were .5 to 2 pound fish. I'm sure they have been some in there a long time, but I just don't really remember catching any before then.
Never saw Blues here either until the time you mentioned. GW Dowdy thought someone put some adults in here, and A LOT more came in the flooding. Have seen some solid 5-7 pounders. Big fish this past year was 12lb.