Spurdie,

I am in the southeast corner of KY and not found a lot of true pond builders in this part of the state. Check with your local NRCS they should be able to help more than the extension office. Check out www.grayconstruction.net they are in middle TN, but will travel some into KY (unfortunately not as far east as me). I am in no way a pond expert, but this sounds like a big renovation at 2.5 acres and only 4 feet deep, with the acreage you might want to consider a new build, especially if this is close enough to get river flooded.

Dustin