Anyone know where I can find a decent Lake Arlington map?

The only map I have ever seen of Lake Arlington is the one you get at the office on the lake. It's not much , just a little better than nothing. LOL

If you have a smart phone or tablet, download Navionics.
It will show you starter depth, structure, channels, and a lot of other stuff, plus you will get the info on most other lakes as well.
Good luck.

You can go to navionics.com, click on the web app, scroll to and zoom in on the lake. Click the button on the lower left for the sonar charts layer. It's pretty well mapped.

thanks

http://webapp.navionics.com/?lang=en