Potato Lake Arizona. Potato Lake is more of a lake to have a picnic at or a party. Apparently it used to be a decent sized lake but there were some issues with its damn. It's now only about two acers big. It's a pretty lake but not a fishing destination. I tried worms there for about a hour with no luck. If you decide to give a shot, the worst thing that could happen is that you have to pack everything up and drive to Blue Ridge Reservoir about 20 minutes Northeast.