Great park for us but can't guarantee the same experience for you
Why was it a very good place for us?
For us, this was a hidden gem on a Friday in September, but be aware it may not be the same experience for you. Most of the sites were open on reserveamerica.com so we knew we could just show up and choose a site. We went out to the end of area 3 (out of 5 areas) with sites 77-122 (non-electric) because it ends with a loop. There was a tent across the loop on #100. We chose #94 which had plenty of room, a sunny area for our solar panels and lots of shade. It was a great site for us.
Will your experience be different?
You need to be aware this is an old park. I would hesitate to reserve a site just by looking at sites on the online map. I've included a photo of the map the attendant had to show a view of the areas...electric and non-electric with a total of 151 sites. Many of the parking pads are extremely short although some are wide enough for a vehicle and trailer...or 2 vehicles.
Some of the areas where you can pitch a tent are pretty rough, especially at the beginning of area 3. See photos. #119 was a site in use and it looks like a great site for two tents (as long as it doesn't rain because you can see in the photo that you're in a valley).
Be aware there could be some things you might not like...short parking pads, difficult tent areas, pit toilets. There are showerhouses that include sinks but the toilets are pit toilets in separate buildings.
I did not find potable water. There were water fountains that were not running, but there were several gray water dump wells and and a dump station.
Yes, it's a bit rough around the edges. We liked that it wasn't crowded. The attendant said the park was full over Memorial Day weekend. Other campers told me there's a chili cookoff around Halloween, and it's a great place to camp around then.
If you love the amenities of a modern campground, you could be disappointed. If you like roughing it, you'll enjoy the setting. And you can show up without a reservation and choose a site.
Activities
The attendant told me the disc golf course attracts people because it's very good.
A few short hiking trails
Archery range
Forked Run Lake has a boat ramp and 400-foot sand beach.
What about cell phone service?
Verizon's network was available but not in all areas. There is decent wifi by the entrance station.