I realize this is resurrecting a pretty old thread but looks like the survey just finished for the lakes...
https://themappingnetwork.wordpress.com/2015/07/20/watershed-and-bathymetry-in-arkansas/
The link doesn't show it but the post was made on Monday, July 20, 2015.
I was just in the POA office this morning and they didn't know anything about the data for this. So not sure when it'll be made available but at least we know it's a little closer. I do appreciate the GIS links provided earlier as from a fishing standpoint it's nice to know what some of the feature were etc.. prior to the lakes being flooded.
