No-Tye-Much:

Thanks! That's pretty much what I was looking for. Now to find out if there is any way to access those lakes without having to shell out $$ to LCRA.

On the subject of Town Lake: I have tried to contact park officials on whether or not tubes are allowed, but everything I have heard so far says no. I saw a document a while back on the internet that said they didn't allow any sort of swimming or wading (including float tubes) due to the undertoes that are frequently quite strong.

Cheers!