Texoma Park is just what we needed.

Pulled in, filled the fresh tank, dumped the others and found a parking spot for the night. 

Excellent electric hook ups (although it appears there's one station out of service). 

Playgrounds and picnic areas, dog park. 

Yes, there's a train that ran up till about 10pm and returned at 3:30 am. 

As a parking lot it got seriously hot before sun down but cooled off nicely over night (late June). 

We would definitely stay again.