This is the WORST State Park we have ever been in. Built many years ago, nothing has been done to the sites since, including cleaning. There are very few that will take a rig of more than 20 feet, and that will be very unlevel. There are a few pull-throughs on the right hand loop as you pull in. Note: DO NOT use left loop if you are more than 20 feet, as there is a very short and sharp gully that could result in high-siding. The Horse Campground is very nice - with all the amenities you miss in the regular area - but you must have a horse. The Rangers were indifferent and seldom seen, acting as if taking your money was too much effort. Take a miss on this, unless you feel you must play the Nicklaus golf course. And then stay somewhere else!
What a gem. Drive the 7 miles off the Interstate and treat yourself to camping done right. Unlike most Oklahoma State Parks, this one is worth the effort. Superb sites in the developed campgrounds. More rustic, but well done ones in the lesser developed area. Friendly rangers check you in at your site (seniors get a discount). And the maintenance people are diligent about keeping things clean. A new, tornado-proof bathhouse was nearly finished when we were there.
I guess we are in a different park. The sites were nice, but hadn't been cleaned in forever. Tables and fire rings were often in someone else's camping area. But the Camp Hosts were the BIG problem. Loud and obnoxious themselves, their loose and noisy dogs finished the picture. Park Rangers spent most evenings sitting at the host site, talking, and ignoring everything else. A shame - they should be forced to go to Foss Lake State Park to see how a park should be run.