I think Bigsky is confused. There is nothing, not brush, no fence/wall or crappie along the dam. Probably best to find a new lake to target crappie!!!!
Yes there is some structure along the dam, go parallel with the dam in 18-20' of water and you will see it. If you have side imaging, you may try that in the depths i mentioned and at a range of 60' on either side and you cant miss it. Last week it was holding a lot of crappie and most were above it about 3'. There are also brush piles in most coves,, some timber on the north side of turkey hollow (the cove on the north side of the dam) put your time in, drive slow and you will find some good structure from rocks, standing timber and brush that will hold fish.